Polyseal Total Sealing Technology

Transcription

1 ontents ompany Profile Product Range Index Product Range Section / Piston Seals Section B S/ Piston Seals Section Rod Seals Section Rod Wipers Section E Bearing rings Section F ORings & Backup Rings Other laron Group Products ppendix 1 Guide To Seal Selection ppendix 2 Materials ompatibility & Storage Polyseal Total Sealing Technology Polyseal is a registered trade name of laron Hydraulic Seals Ltd. Elastomer Based Seals: laron Hydraulic Seals Ltd. Station Road, radley Heath West Midlands. B64 6PN UK Tel. +44 () Fax. +44 () sales@claronseals.co.uk Website: PTFE / Plastic Faced Seals: laron Hydraulic Services Yalberton Industrial Estate, Paignton evon, TQ4 7QL UK Tel. +44 () Fax. +44 () sales@claron.co.uk Website: PTFE Stock Shapes: laron (Plastics) Ltd. Yalberton Industrial Estate, Paignton evon, TQ4 7QL UK Tel. +44 () Fax. +44 () plastics@claron.co.uk Website: ppendix 3 Seal Installation ppendix 4 Tolerance Tables ppendix 5 Terms & onditions Of Sale Health & Safety t Work ct opyright 1998 laron Hydraulic Seals Ltd This catalogue may not be altered in any way, copied or reproduced in any form without written permission. for updated information

2 The laron Group of companies is one of the leading manufacturers of high quality hydraulic and pneumatic sealing products, marketing a range of seals under the Polyseal trade name. Based in the UK, it has expanded rapidly since its formation in 1973 and since 1985 has continued to develop modern manufacturing plants in both the West Midlands and South evon. high level of expertise in the manufacture of rubber and plastics products enables the group to coordinate the design and manufacture of high quality seals using many specialist materials. Various combinations of rubber/fabric, polyurethane s, PTFE ompounds, TPE, POM, UHMWPE, VESPEL, PEEK and Phenolic along with other high performance materials enables the Group to offer an extremely comprehensive range of sealing products. The extensive knowledge of modern materials necessary for the production of the Polyseal range of products and the further development of specialist processing methods also provide the facilities for other complementary ranges of products and customer related services. laron is the UK s largest manufacturer of stock shapes based on PTFE compounds specifically developed for sealing systems. The quality of this range of products has gained the approval and widespread use of many diverse industries whether supplied as P.T.F.E. semifinished products or machined components. The trend towards the supply of quality seal kits, packaged to meet the requirements of both production and aftermarket sales is also uniquely accommodated by the Group, being ideally suited to the many diverse methods of manufacture available. laron is not only a market leader but unique within the UK for the range of products manufactured. With the exception of both ORing production all the products shown in this catalogue are manufactured by laron within the UK, utilising modern inhouse plant and stringent quality procedures to ISO Standards. The Group is uniquely equipped to meet the demands of today s sealing technology and a continuing policy of product development with a commitment to quality and excellence ensures that the Group will continue to be capable of meeting the future demands of the Hydraulics and Pneumatic industries with products at the forefront of technology. The laron Group operate a quality management system, accredited through the BSI, to the BS EN ISO 92; 1994 standard. laron Group Products Hydraulic & Pneumatic Seals Seal Kits Precision Rubber Mouldings PTFE Stock shapes Bellows & omponents Plastics, Gaskets Valve Seats

3 Type laronpolyseal Product Range Profile Style escription SPS ouble acting NBR piston seal for one piece pistons, incorporating Polyester antiextrusion rings & POM bearing rings Temp. Pressure Bar Speed M/Sec Maximum NonSimultaneous onditions 3 to vailability Inch Page 1 SPS ouble acting NBR piston seal for one piece pistons, incorporating P.T.F.E. antiextrusion rings & POM bearing rings. 3 to P ouble acting NBR piston seal with rubberised fabric reinforcement. 3 to PE ouble acting NBR piston seal with rubberised fabric reinforcement & clip on POM antiextrusion rings. 3 to ouble cting Piston Seals Section PW PW.../L JS/H PS ouble acting NBR piston seal with rubberised fabric reinforcement & clip on POM antiextrusion Bearing rings. ouble acting NBR piston seal with rubberised fabric reinforcement & full width POM antiextrusion Bearing rings. ouble acting NBR piston seal with polyester antiextrusion headers. ouble acting NBR piston seal for one piece pistons, incorporating Hytrel antiextrusion rings & POM bearing rings. 3 to 1 3 to 1 3 to 1 3 to " SF ouble acting NBR rubberised fabric piston seal incorporating POM antiextrusion header. 3 to " 9 PRF PF ouble acting NBR rubberised fabric piston seal incorporating POM or NBR filler ring. 3 to " 1 all SPW ouble acting NBR energised Bronze filled PTFE piston seal for one piece pistons, incorporating MoS 2 filled P antiextrusion rings. 3 to SPG ouble acting NBR energised Glass filled PTFE piston seal for one piece pistons. 4 to " 12 PR1

4 Type Single cting Piston Seals Section B ouble cting Piston Seals laronpolyseal Product Range Profile Style escription S 8 SPGI S S2 S4 Ring SE P P GP PRU PFU ouble acting NBR energised 98 Shore Polyurethane piston seal for one piece pistons to ISO/European housing standards. ouble acting NBR energised 98 Shore Polyurethane piston seal for one piece pistons to Japanese housing standards ouble acting NBR energised Bronze filled PTFE piston seal for one piece pistons. ouble acting NBR energised PTFE piston seal for one piece pistons. ouble acting NBR energised Bronze filled PTFE piston seal for one piece pistons ouble acting NBR energised PTFE piston seal for ORing housings to BS186 & BS4518. Single acting NBR piston / rod seal with rubberised fabric reinforcement. Single acting NBR piston / rod seal with rubberised fabric reinforcement. Single acting USection NBR piston / rod seal with rubberised fabric reinforcement. Single acting USection NBR piston / rod seal. Single acting USection NBR rubberised fabric piston / rod seal. Temp. Pressure Speed vailability Bar M/Sec Inch Page Maximum NonSimultaneous onditions 3 to 1 3 to 1 5 to 2 5 to 2 5 to 2 5 to 2 3 to 1 3 to 1 3 to 1 3 to 1 3 to " " " " all B1 B2 B3 B4 all B5 all PR2

5 Type laronpolyseal Product Range Profile Style escription PE Single acting NBR piston seal with rubberised fabric reinforcement & clip on POM antiextrusion ring. Temp. Pressure Bar Speed M/Sec Maximum NonSimultaneous onditions 3 to vailability Inch Page " B6 PEO Single acting NBR piston seal with rubberised fabric reinforcement & clip on POM antiextrusion ring. 3 to " B7 GPE Single acting USection NBR piston seal with rubberised fabric reinforcement & clip on POM antiextrusion ring. 3 to B8 PW Single acting NBR piston seal with rubberised fabric reinforcement & clip on POM bearing ring. 3 to " B9 Single cting Piston Seals Section B GPW PW.../L PU PU.../P FP Single acting USection NBR piston seal with rubberised fabric reinforcement & clip on POM Bearing ring. Single acting NBR piston seal with rubberised fabric reinforcement & full width POM bearing ring. Single acting USection U piston / rod seal. Single acting symetric U piston seal. Single acting NBR rubberised fabric piston seal. 3 to 1 3 to 1 4 to 11 4 to 11 3 to B1 B11 B12 B13 B14 PR Single acting NBR piston seal. 3 to B15 all 851 Single acting NBR energised Bronze filled PTFE piston seal for one piece pistons. 5 to B16 PE Single acting NBR piston seal. 3 to B17 all PR3

6 Type laronpolyseal Product Range Profile Style escription Temp. Pressure Speed vailability Bar M/Sec Inch Page Maximum NonSimultaneous onditions Rod Seals Section B PSR P P GP PI PEI PV PVM PS POM piston seal retaining ring. Single acting NBR rod / piston seal with rubberised fabric reinforcement. Single acting NBR rod / piston seal with rubberised fabric reinforcement. Single acting USection NBR rod / piston seal with rubberised fabric reinforcement. Single acting NBR rod seal with rubberised fabric reinforcement & clip on POM antiextrusion ring. Single acting NBR rod seal with rubberised fabric reinforcement & clip on POM antiextrusion ring. Single acting NBR rubberised fabric rod / piston seal. PVM include NBR VRings as standard Single acting NBR rod seal incorporating a Polyester antiextrusion header & POM antiextrusion rings. 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to " " " " B EGS Single acting NBR rod seal incorporating rubberised fabric reinforcement and polyester anti extrususion header. 3 to " 8 PU Single acting USection U rod / piston seal. 4 to PU.../F Single acting USection U rod / piston seal. 3 to PU.../G Single acting symetric U rod seal. 4 to PR4

7 Type laronpolyseal Product Range Profile Style escription Temp. Pressure Bar Speed M/Sec Maximum NonSimultaneous onditions vailability Inch Page PG Single acting symetric U rod seal with secondary sealing lip. 4 to PS Single acting solid section U rod seal. 4 to " 13 PU.../OR Single acting USection U rod seal with NBR energiser. 4 to PUI.../OR Single acting USection U rod seal with NBR energiser & MoS 2 filled P antiextrusion rings. 4 to " 15 Rod Seals Section PGI.../OR HBI S6 Single acting USection U rod seal with NBR energiser, MoS 2 filled P antiextrusion rings, & secondary sealing lip Single acting USection U rod seal with POM antiextrusion rings. ouble acting NBR energised Bronze filled PTFE rod seal. 4 to 11 4 to 11 5 to " " ouble acting NBR energised Bronze filled PTFE rod seal. 5 to ouble acting NBR energised Bronze filled PTFE rod seal. 5 to S1 S3 ouble acting NBR energised PTFE rod seal. 5 to HBT Single acting NBR energised Bronze filled PTFE rod seal. 5 to HBTY Single acting NBR energised filled PTFE tandem seal. 3 to " 21 PR5

8 Type laronpolyseal Product Range Profile Style escription SI ouble acting NBR energised PTFE rod seal for ORing housings to BS186 & BS4518. Temp. Pressure Speed vailability Bar M/Sec Inch Page Maximum NonSimultaneous onditions 3 to all PFU Single acting USection NBR rubberised fabric rod / piston seal. 3 to all Rod Wipers Section Rod Seals Section PRU PI PRF PF PFI PF PWB PWO PWS PWM Single acting USection NBR rod / piston seal. Single acting USection NBR rod seal. Single acting NBR rubberised fabric rod seal incorporating POM or NBR filler ring. Single acting NBR rubberised fabric rod seal. Single acting NBR rubberised fabric rod seal. Single acting NBR light duty rod wiper. Single acting NBR medium to heavy duty rod wiper. Single acting NBR medium to heavy duty rod wiper. Single acting NBR medium to heavy duty rod wiper. 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to 1 3 to " " " 24 all 25 all 26 all 27 all 28 all WM Single acting NBR medium to heavy duty rod wiper. 3 to 1 3. " 5 PR6

9 Type laronpolyseal Product Range Profile Style escription Temp. Pressure Bar Speed M/Sec Maximum NonSimultaneous onditions vailability Inch Page PWE Twinlip NBR medium to heavy duty rod wiper. 3 to 1 3. " 6 SWM SW Single lip MoS 2 filled P medium to heavy duty rod wiper. 4 to 1 7 PMW Single lip metal cased U medium to heavy duty Press fit rod wiper. 4 to " 8 PFB Twinlip metal cased NBR medium to heavy duty Press fit rod wiper. 3 to 1 3. " 9 PFP Twinlip metal cased U medium to heavy duty Press fit rod wiper. 4 to " 1 Rod Wipers UPWM PW Single lip U medium to heavy duty rod wiper. Twinlip U medium to heavy duty rod wiper. 4 to 11 4 to " " EW Single lip U heavy duty rod wiper. 4 to " Single lip NBR energised PTFE light to heavy duty rod wiper. 5 to Twinlip NBR energised PTFE light to heavy duty rod wiper. 5 to PWH Twinlip NBR light duty rod wiper. 3 to 1 3. " 15 all PWN Twinlip NBR medium to heavy duty rod wiper. 3 to 1 3. " 16 all PR7

10 Type laronpolyseal Product Range Profile Style escription Temp. Pressure Bar Speed M/Sec Maximum NonSimultaneous onditions vailability Inch Page ORings & Backup Rings Section F Bearing Rings Section E PW EBR IBR BT T BGF PBR BS.../OR7 BS.../OR9 BS.../ORP BS.../ORV BS... BS.../E Single lip U medium to heavy duty rod wiper. POM rod/piston bearing rings. Bronze or arbon filled PTFE rod/piston bearing rings. Glass filled P rod/piston bearing rings. Reinforced Phenolic resin rod / piston bearing rings. NBR ORings 75 IRH. NBR ORings 9 IRH. U ORings. P.T.F.E. ORings. P.T.F.E. ntiextrusion rings to suit ORings in Spiral, Endless, or Endless Split styles. 4 to 11 4 to 11 6 to to 13 3 to 1 4 to 11 2 to to +2 See Table See Table See Table See Table " 17 E1 E2 E3 E4 F1 all F2 all F3 all F4 BS.../ES LL PROUTS RE PROUE IN HOUSE IN THE U.K. EXEPT FOR BULK RUBBER O RING PROUTION. PR8

11 laronpolyseal Section ouble cting Piston Seals

12 laronpolyseal ouble cting Piston Seal SPS Imperial esigned for use on one piece pistons, the five part assembly consists of an endless precision rubber moulded sealing element supported at each end with angle split support rings. The support rings are designed to accommodate split Polyacetal antiextrusion bearing rings. The design allows the anti extrusion bearing rings to react positively to increasing pressures. The final assembly provides a robust sealing unit designed to operate at higher pressures. The seal is also suitable for existing two piece pistons of the same housing dimensions. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 3 to 8 3 to Bar 3 Bar.15 5 Bar 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Fit seal onto the piston in the following sequence. 1 Rubber Sealing Element 2 Support Rings 3 Polyacetal bearing rings. It is important that care be taken in fitting the seal within its housing. Refer to ppendix 3 for check list. 11

13 laron H1 Ø 1 h9 Ød 1 laronpolyseal ouble cting Piston Seal SPS Nominal imensions & Machining Tolerances h9 h Nominal Minimum Maximum Maximum +.38 Ød 2 Ød 3 L 1 L 2 S R 1 R 2 * SPS 12594/2 SPS /1 SPS SPS SPS / SPS SPS /1 SPS SPS SPS / SPS SPS SPS SPS /4 SPS SPS 24828/1 SPS SPS SPS SPS / SPS SPS SPS /4 SPS SPS / SPS SPS SPS /1 SPS SPS SPS SPS SPS SPS SPS SPS SPS SPS /1 SPS SPS SPS SPS Items in BOL are to suit ISO 6547 Housings Items marked * comprise of sealing element and two split bearing rings only 12

14 laron H1 Ø 1 laronpolyseal ouble cting Piston Seal h9 Ød 1 SPS Nominal imensions & Machining Tolerances Imperial h9 h " +.4. Nominal Minimum +" Maximum Ød 2 Ød 3 L 1 L 2 S R 1 R 2 SPS SPS 2137 SPS SPS SPS SPS 2752 SPS 3225 SPS SPS SPS SPS SPS 3753 SPS 4325 SPS 4337 SPS SPS 54 SPS 5425 SPS

15 laronpolyseal ouble cting Piston Seal SPS Imperial esigned for use on one piece pistons, the five part assembly comprises of a precision moulded rubber sealing element to which are fitted endless P.T.F.E. antiextrusion ring son the O.. The anti extrusion rings are designed to be pre loaded on assembly thus effecting a more positive sealing arrangement. Split Polyacetal antiextrusion bearing rings are added either side to provide support for the piston head. This compact one piece piston seal has proven to be popular and effective over a wide range of applications. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 3 to 8 3 to Bar 11 Bar Bar 16 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Fit seal onto the piston in the following sequence. 1 Solid nti Extrusion Ring. 2 Rubber Sealing Element 3 Solid nti Extrusion Ring. 4 Polyacetal bearing rings. It is important that care be taken in fitting the seal within its housing. Refer to appendix 3 for check list. 21

16 laron H1 Ø 1 laronpolyseal ouble cting Piston Seal h9 Ød 1 SPS Nominal imensions & Machining Tolerances h9 h9 Ød 2 Ød L 1 L 2 Nominal Minimum Maximum S R 1 R 2 * SPS 9868 SPS 11882/4 SPS SPS SPS SPS SPS SPS SPS SPS * This size comprises Rubber Sealing Element and two Split Bearing Rings only. 22

17 laron H1 Ø 1 laronpolyseal ouble cting Piston Seal SPS Imperial Nominal imensions & Machining Tolerances h9 h9 h9 +.25".5 Nominal Minimum Maximum +". Ød 1 Ød 2 Ød 3 L 1 L 2 S R 1 R 2 * SPS 168 SPS 1675 SPS SPS SPS SPS /1 SPS 2162 SPS 2162/1 SPS 2372 SPS SPS SPS SPS SPS 3237 SPS SPS SPS 353 SPS SPS Items marked * comprise of Sealing Element and two Split Bearing Rings only. 23

18 laronpolyseal ouble cting Piston Seal P Imperial esigned for use on split pistons, the seal is a precision moulded Nitrile rubber element with bonded rubberised fabric reinforcements. The seal is designed with initial radial interference such that when fitted low pressure sealing is effected. Rubberised fabric has the advantage of retaining the sealing media within its surface, thus reducing friction and wear. Style P has proven to be effective over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar F (mm) ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 31

19 laron laronpolyseal ouble cting Piston Seal P Nominal imensions & Machining Tolerances H11 js Nominal Minimum Maximum Ø 1 Ød 1 L 1 S R 1 P 9859 P P 15798/1 P P / P P /1 P /1 P P P /2 P /2 P /1 P P P P /2 P P P 59492/ P P

20 laron laronpolyseal ouble cting Piston Seal P Imperial Nominal imensions & Machining Tolerances H11 js " +" Nominal Minimum Maximum Ø 1 Ød 1 L 1 S R 1 P 7537/1 P 875 P 162 P P 11262/ P P P 151 P 1621 P P 2137 P P P P P 2622 P 2752 P 3225 P 3225/4 P P 32525/3 P P 3753 P 4325 P 42324/ P P 4535 P P 54 P P 5545 P 65 P 76 P

21 laronpolyseal ouble cting Piston Seal Imperial PE esigned for use on split pistons, the seal is a precision moulded rubber element with rubberised fabric reinforcements. Style PE is fitted with Polyacetal antiextrusion rings on the O.. to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style PE has proven to be effective over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 41

22 laron H11 Ø 1 laronpolyseal ouble cting Piston Seal PE Nominal imensions & Machining Tolerances js Nominal Minimum Maximum Ød 1 L 1 S R 1 PE 9847 PE PE PE PE PE PE /1 PE /1 PE PE PE PE PE PE PE PE PE PE PE /1 PE PE PE PE PE PE PE PE

23 laron laronpolyseal ouble cting Piston Seal PE Imperial Nominal imensions & Machining Tolerances H11 js " +" Nominal Minimum Maximum Ø 1 Ød 1 L 1 S R 1 PE 162 PE PE PE 151 PE PE PE 2137 PE PE PE PE PE 25187/1 PE 2622 PE 2752 PE PE 3225/1 PE PE PE PE PE PE 4325 PE PE 4535 PE 4535/ PE PE 54 PE PE 5545 PE 545/ PE PE 65 PE 6555 PE 76 PE

24 laronpolyseal ouble cting Piston Seal PW Imperial esigned for use on split pistons, the seal is a precision moulded rubber element with rubberised fabric reinforcements. Style PW is fitted with clip on antiextrusion bearing rings on the O.. to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The Polyacetal bearing rings also support the piston head under side load conditions thus preventing metal to metal contact. The bearing rings are an integral part of the seal therefore react directly to operating pressures thus closing the extrision gap. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style PW has proven to be effective over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 51

25 laron H11 Ø 1 js11 Ød 1 laronpolyseal ouble cting Piston Seal PW Nominal imensions & Machining Tolerances js1 js Nominal Minimum Maximum Maximum.38 Ød 2 Ød 3 L 1 L 2 S R 1 R 2 PW 9847 PW PW PW PW PW PW /1 PW /1 PW PW PW PW PW PW PW PW PW PW PW PW / PW PW PW PW PW PW PW PW PW

26 laron laronpolyseal ouble cting Piston Seal PW Imperial Nominal imensions & Machining Tolerances H11 js11 js1 js " +.4. Nominal Minimum Maximum Maximum +" Ø 1 Ød 1 Ød 2 Ød 3 L 1 L 2 S R 1 R 2 PW 162 PW PW PW 151 PW 151/S PW PW PW 2137 PW PW PW PW PW 25187/1 PW 2622 PW PW 3225 PW 3225/1 PW PW PW PW 3753 PW PW 4325 PW PW PW 4535/1 PW PW 54 PW PW PW 5545/2 PW PW 65 PW 6555 PW PW 87 PW

27 laronpolyseal ouble cting Piston Seal PW/L Imperial esigned for use on split pistons, the seal is a precision moulded rubber element with rubberised fabric reinforcements as style P but with additional full width Polyacetal antiextrusion bearing rings at each end to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The Polyacetal bearing rings also support the piston head under side load conditions thus preventing metal to metal contact. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style PW/L has proven to be effective over a wide range of applications and is a popular alternative for existing housing designs. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 61

28 laron H11 Ø 1 laronpolyseal ouble cting Piston Seal Js11 Ød 1 PW/L Nominal imensions & Machining Tolerances h9 js11 Ød 2 Ød L 1 L 2 Nominal Minimum Maximum S R 1 R 2 PW 9859/L PW 12586/L PW 13787/L PW 15798/1L PW 17712/L PW /1L PW /L PW /1L PW /L PW /L PW /2L PW /2L PW /1L PW L PW /L PW /L PW /2L PW /L PW 57492/L PW 59492/1L PW /L PW /L

29 laron H11 Ø 1 laronpolyseal ouble cting Piston Seal Js11 Ød 1 PW/L Imperial Nominal imensions & Machining Tolerances h9 js " +.5" Nominal Minimum Maximum +". Ød 2 Ød 3 L 1 L 2 S R 1 R 2 PW 7537/1L PW 162/L PW 11262/1L PW 12575/L PW 13787/L PW 151/L PW 1621/L PW /L PW 2137/L PW /L PW /L PW 25187/L PW 2622/L PW 2752/L PW 3225/L PW 3225/4L PW 32525/L PW 35275/L PW 3753/L PW 4325/L PW 42535/L PW 4535/L PW /L PW 54/L PW /L PW 5545/L PW 65/L PW 6555/L PW 76/L

30 laronpolyseal ouble cting Piston Seal JS.../H Imperial esigned for use on one piece pistons, the three part assembly consists of an endless precision rubber moulded sealing element supported at each end with split polyester support rings. The seal is also suitable for existing two piece pistons of the same housing dimensions. These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Pressure Bar Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar Maximum iametral learance F F (mm) ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1. The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 71

31 laron laronpolyseal ouble cting Piston Seal JS.../H Imperial Nominal imensions & Machining Tolerances H11 js Nominal Minimum Maximum.38 Ø 1 Ød 1 L 1 S R 1 JS 112/H JS 137/H JS 15/H JS 162/H JS 175/H JS 2/H JS 225/H JS 25/H JS 3/H JS 325/H JS 35/H JS 375/H JS 4/H JS 45/H JS 5/H JS 55/H

32 laronpolyseal ouble cting Piston Seal PS Imperial laron Style PS double acting piston seal is a 5 piece assembly consisting of a Nitrile Rubber sealing element supported by 2 thermoplastic elastomer headers with cetal antiextrusion bearing rings on the O.. The complete assembly forms a highly robust sealing unit for use in high pressure applications where shock loads and pressure spikes are present. This seal is widely used in the mobile plant industry. Maximum Pressure ontinuous operating temperature for various Fluids NBR Rubber Max Speed Temp. Range IN Hydraulic Fluid escription m/s 3 to 1 H Mineral oil without additives Bar HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load Bar HLP Mineral oil as HLP but with detergents and dispersants 1 These range perameters are Maximum simultaneous conditions. HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 These range parameters are Maximum conditional values. HF S Synthetic oil in water. Water content 895% 55 Optimum service conditions are affected by temperature, HFB Emulsions of water in mineral oil. Water content 4% 6 speed, pressure, surface finish and extrusion gaps. HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS Refer to ppendix 1 for further information. HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PS is designed to be fitted onto a split piston as shown in the illustration below. The seal can be supplied split to ease fitting if required. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 81

33 laron H 11 Ø 1 laronpolyseal ouble cting Piston Seal PS Nominal imensions & Machining Tolerances h 1 js 1 js Ød 1 Min Max. Ød 2 Ød 3 L 1 L 2 S R 1 R 2 PS PS PS

34 laron H 11 Ø 1 laronpolyseal ouble cting Piston Seal PS Imperial Nominal imensions & Machining Tolerances h 1 js 1 js Min Max. +. Ød 1 Ød 2 Ød 3 L 1 L 2 S R 1 R 2 PS PS 4325 PS 4535 PS 54 PS

35 laronpolyseal ouble cting Piston Seal SF laron Style SF is a single acting piston seal which may also be arranged back to back in pairs to form a double acting piston assembly. The sealing element is manufactured from fabric reinforced Nitrile Rubber with either an cetal or fabric reinforced Header ring. The seal assembly forms a highly robust unit resistant to shock loads and high pressures typically found in mobile plant equipment. These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to appendix 1 for further information. Maximum iametral learance F Pressure Bar Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 6 Bar F (mm) ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style SF is designed to fit back to back on a split piston. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 91

36 laron H9 Ø 1 laronpolyseal ouble cting Piston Seal h11 Ød 1 SF Nominal imensions & Machining Tolerances +. e Nominal Minimum Maximum Ød 2 Ød 3 L 1 S R 1 SF SF SF SF SF SF FH SF SF FH SF SF /1FH SF FH SF SF FH SF SF FH SF SF SF FH Items in BOL are to suit ISO 5597 housings. Suffix FH denotes Fabric reinforced header. 92

37 laronpolyseal ouble cting Piston Seal SPW esigned for use on one piece pistons, the seal assembly consists of a filled PTFE high performance outer sleeve, pre loaded and pressure energised by a precision moulded NBR element. These two components are protected from extrusion at either side by the fitting of two low friction plastic antiextrusion rings making the seal highly resistant to shock loads as found in heavy duty mobile equipment. The housing dimensions are those used in standard metric J.I.S. cylinders. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 3 to 8 3 to Bar 28 Bar 2 5 Bar 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of m ineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

38 laron H9 Ø 1 laronpolyseal ouble cting Piston Seal SPW Nominal imensions & Machining Tolerances +..2 Ød L 1 Nominal SPW 5 SPW 6 SPW 65 SPW 7 SPW SPW 8 SPW 85 SPW 9 SPW 95 SPW SPW 15 SPW 18 SPW 11 SPW 115 SPW SPW 125 SPW 13 SPW 135 SPW 14 SPW SPW 15 SPW 16 SPW 165 SPW 17 SPW SPW 185 SPW 19 SPW 2 SPW 21 SPW SPW

39 laronpolyseal ouble cting Piston Seal Imperial SPG laron composite seals Style SPG are designed as high pressure, Low Friction oublecting Piston Seals for use in heavy duty hydraulic cylinders as found in mobile equipment to merican designs. laron Style SPG consists of a glass filled high performance P.T.F.E. sealing eliment, energised by a precision moulded rectangular section NBR rubber. ontinuous operating temperature for various fluids Temp 4 to 12 Pressure upto 8 bar Velocity upto 15m/s These range parameters are maximum conditional values. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum Working Pressure for Standard seal applications using specified tolerances and clearances. Temp. range Temp. range 3 to 8 8 to 12 8bar 35 bar Polyure thane / Nitrile om pos ite IN Hydra ulic Fluid escription H Mine ral oil with out additiv es 1 HL Mine ral Fluid with anti c orrosion an d anti ag eing additives 1 HL P Mine ral oil as HL p lus additives re ducin g wea r, r aising load 1 HL P Miner al o il as HLP b ut with de tergents and dispe rsants 1 HV Min era l oil as HL P plus impr oved viscosity tem p. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthe tic oil i n water. Water conte nt 895% 4 HFB Emulsions of wate r in mineral oil. Wate r conte nt 4 % 4 HF queous polyme r solu tions. Wate r con tent 35 % NS HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HE TG Vegetable Oil ba se d 6 HEES Fully synthetic e ster ba se d NS iametrical learance F shown in the graph is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures upto 8. This product is intended for use with either STYLE PBR or STYLE BGF Bearing Rings which effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability. The maximum seal extrusion gap should be calculated allowing for all tolerances, movement and cylinder expansion. For pressures > 4 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for ylinder bore, f8 for piston diameter either side of the seal. issue 1 22/4/99 121

40 laronpolyseal ouble cting Piston Seal Imperial SPG For F/2 values see note & table For E/2 values see Bearing Housing laron H9 Ø 1 Nominal imensions & Machining Tolerances Nominal Ød 1 L 1 S Nominal SPG2 SPG25 SPG275 SPG3 SPG SPG35 SPG375 SPG4 SPG425 SPG SPG475 SPG5 SPG525 SPG55 SPG SPG625 SPG65 SPG7 SPG725 SPG SPG925 SPG issue 1 22/4/99 122

41 laronpolyseal ouble cting Piston Seal S 8 esigned for use on one piece pistons, laron Style S8 consists of a precision moulded high performance 98 Shore Polyurethane outer sleeve, pre loaded and pressure energised by a square section NBR 8 Shore rubber element. The compact design allows smaller width pistons to be used, and offers excellent wear resistance on a wide range of surface finishes. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 3 to 8 3 to Bar 25 Bar.5 45 Bar 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids Polyure thane / Nitrile om pos ite IN Hydra ulic Fluid escription H Mine ral oil with out additiv es 1 HL Mine ral Fluid with anti c orrosion an d anti ag eing additives 1 HL P Mine ral oil as HL p lus additives re ducin g wea r, r aising load 1 HL P Miner al o il as HLP b ut with de tergents and dispe rsants 1 HV Min era l oil as HL P plus impr oved viscosity tem p. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthe tic oil i n water. Water conte nt 895% 4 HFB Emulsions of wate r in mineral oil. Wate r conte nt 4 % 4 HF queous polyme r solu tions. Wate r con tent 35 % NS HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HE TG Vegetable Oil ba se d 6 HEES Fully synthetic e ster ba se d NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 values see Bearing Housing 131

42 laronpolyseal laron H9 Ø 1 ouble cting Piston Seal S 8 Nominal imensions & Machining Tolerances +.2 h9. Ød 1 L 1 Nominal S Nominal S 82 S 825 S 83 S 832 S S 84/2 S 845 S 85 S 85/2 S 855/ S 86 S 86/2 S 863 S 863/2 S 865/ S 865/4 S 87 S 87/2 S 875/2 S S 89 S 81 S 81/2 S 81/4 S 811/ S 812/2 S 8125/2 S 813/2 S 814 S S 816 S 818 S

43 laronpolyseal ouble cting Piston Seal SPGI esigned for use on one piece pistons. The seal consists of a precision moulded high performance 98 Shore Polyurethane outer sleeve, pre loaded and pressure energised by a square section NBR 8 Shore rubber element. The compact design allows smaller width pistons to be used. The seal offers excellent wear resistance on a wide range of surface finishes. Sizes conform to standard Japanese housings. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 3 to 8 3 to Bar 25 Bar.5 45 Bar 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for variuos fluids Polyure thane / Nitrile om pos ite IN Hydra ulic Fluid escription H Mine ral oil with out additiv es 1 HL Mine ral Fluid with anti c orrosion an d anti ag eing additives 1 HL P Mine ral oil as HL p lus additives re ducin g wea r, r aising load 1 HL P Miner al o il as HLP b ut with de tergents and dispe rsants 1 HV Min era l oil as HL P plus impr oved viscosity tem p. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthe tic oil i n water. Water conte nt 895% 4 HFB Emulsions of wate r in mineral oil. Wate r conte nt 4 % 4 HF queous polyme r solu tions. Wate r con tent 35 % NS HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HE TG Vegetable Oil ba se d 6 HEES Fully synthetic e ster ba se d NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing 141

44 laronpolyseal laron H9 Ø 1 ouble cting Piston Seal SPGI Nominal imensions & Machining Tolerances +.2 h9. Ød 1 L 1 Nominal S Nominal SPGI 3 SPGI 31.5 SPGI 32 SPGI 4 SPGI SPGI 6 SPGI 63 SPGI 65 SPGI 7 SPGI SPGI 8 SPGI 9 SPGI 1 SPGI 125 SPGI SPGI 16 SPGI 18 SPGI 2 SPGI 22 SPGI SPGI

45 S5 841 laronpolyseal ouble cting Piston Seal S5 841 laron omposite Seals Style S5 and Style 841 are designed as high pressure, low friction oubleacting piston seals for use in heavy duty hydraulic and pneumatic cylinders. laron omposite Seals Style 841 is specifically designed for minimum leakage and slow rotary applications using the same housing designs as Style S5 The inclusion of radial grooves on the P.T.F.E. element, from 2mm diameter onwards, allows rapid response to bidirectional pressure changes. Standard materials are Bronze filled P.T.F.E with a Nitrile ORing Energiser but both the outer sealing element and the energiser are available in a wide range of high performance materials to suit a variety of applications. The application parameters should be carefully considered prior to selecting suitable materials from the tables in ppendix 2. onsult laron for further advice. Temp 54 to 2 ependent upon ORing Material used Pressure upto 8 bar Velocity upto 15m/s These range parameters are maximum conditional values Optimum service conditions are affected by temperature, speed pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp. range Temp. range 3 to 8 8 to 12 4bar 35 bar iametrical learance F shown in the graph to the right is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures upto 8. The use of a suitably selected laron bearing ring will effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability of the seal. The maximum seal extrusion gap should be calculated allowing for all tolerances, movement and cylinder expansion. For pressures > 4 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for ylinder bore, f8 for piston diameter. The full range of diameters applicable to the Standard, Light and Heavy uty Sections are shown in the table below Housing ylinder Bore Section Width Standard Light (/1) Heavy (/2) to to to to to to to to to to to to 58 8 to to to to

46 S5 841 laronpolyseal ouble cting Piston Seal S5 841 When ordering, prefix the size reference with the style required and use the suffix shown in the material application tables ppendix 2. e.g. S5 Standard section in Bronze filled material for 7mm diameter S57/B S5 Light duty section in Glass filled material for 7 mm diameter S57/1G 841 Heavy duty section in arbon filled material for 7 mm diameter 8417/2 For ORing energiser materials other than Nitrile, use suffix shown in material table, ppendix 2. e.g Flourocarbon material (FKM), S57/B/FKM For surface finish and lead in chamfers refer to the illustration below. For Housing dimensions and tolerances refer to the table of recommended sizes, and ppendix 4 for value of tolerance symbols. For F/2 values see note & tables For E/2 refer to Guide Tape page For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix 3 152

47 laronpolyseal Nominal imensions & Machining Tolerances laron Nominal imensions & Machining Tolerances laron S51/B S512/B S514/B S515/B S516/1B S516/B S518/B S52/1B S52/B S522/B S525/B S525/2B S5254/B S528/B S53/B S532/2B S532/B S535/B S536/B S5381/B S54/1B S54/B S542/B S545/B S548/B S55/1B S55/2B S55/B S558/B S552/B S555/B S56/B S563/1B S563/2B S563/B S5635/B S565/B S57/2B S57/B S575/B S58/1B S58/2B S58/B S585/2B S585/B S59/2B S59/B S595/2B S595/B S51/1B S51/2B S51/B S5116/B S515/2B S515/B S511/2B S511/B S51143/B S5115/2B S5115/B S512/2B S512/B S5125/2B S5125/B S5127/B S513/2B S513/B S5135/B S514/B S515/B S51524/B S516/1B S516/2B S516/B S517/B S518/B S519/B S52/1B S52/2B S52/B S521/B S522/B S5225/B S523/B S524/B S525/2B S525/B S526/B S528/B S53/B S532/2B S532/B S535/B S536/B S538/B S54/B S542/B S545/B S548/B S55/B imensions in bold type conform to ISO :1988 Intermediate sizes upto 58mm are available, incl. Imperial F/2 MX Ød 1 h9 L S Nom Sec R 1 MX Ø 1 H9 F/2 MX Ød 1 h9 L S Nom Sec R 1 MX Ø 1 H9 ouble cting Piston Seal S S5 153

48 laronpolyseal ouble cting Piston Seal. S 2 Imperial S 4 S2 S4 laron composite seals styles S2 and S 4 are designed for use in light duty hydraulic or pneumatic piston applications. Style S2 covers the range of imperial sizes, and S4 the metric sizes. laron composite seals style S2 and S4 as standard comprise of a Virgin PTFE outer sleeve and are energised by a 75 shore hardness Nitrile rubber ORing. full range of materials are available to suit a variety of applications. See tables in ppendix 2. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp Range: 4 to +12 (ependent upon energiser material. See ppendix 2) Max. Pressure: 35 Bar Max. Linear Speed: 15m/s These range parameters are maximum conditional values Optimum service conditions are affected by temperature, speed pressure, surface finish and extrusion gaps.. Refer to ppendix 1 section for further information. iametral learance 'F' 'F' shown in the size tables is based upon Virgin P.T.F.E., temperatures up to 8 o and 35 Bar pressure in designs where PTFE guide tape is utilised. For other pressures, refer to the graph shown below. 'F ' M X. (M M ) PRESSURE ( BR) ' F '.8" /.2M M ' F '.12" /.3M M ' F '.16" /.4M M To use this graph, refer to the tables on for the max. value of 'F' at 35 Bar then apply the relevant curve for the various pressures. The maximum extrusion gap 'F/2' should be calculated allowing for all movements due to tolerances, sideloads and cylinder expansion. When ordering, quote the size reference shown on the dimensions table. If an energiser material other than the standard nitrile type is required, consult laron for the part number to be used. For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix 3. For F/2 values see note & Tables For E/2 refer to Guide Tape 161

49 laronpolyseal ouble cting Piston Seal. S 2 Imperial Sizes S 4 Sizes Nominal imensions & Machining Tolerances Nominal imensions & Machining Tolerances laron Part No. Tol. H9 L 1 On. R 1 Ø 1 ±.3 S S Max F Max (35 Bar) laron Part No. Tol. H9 L 1 On. R 1 Ø 1 ±.3 S S Max F Max (35 Bar) S 231 S 234 S 237 S 243 S 25 S 256 S 262 S 268 S 275 S 281 S 287 S 293 S 21 S 216 S 2112 S 2118 S 2125 S 2131 S 2137 S 2143 S 215 S 2156 S 2162 S 2168 S 2175 S 2187 S 22 S 2212 S 2225 S 2237 S 225 S 2262 S 2275 S 2287 S 23 S 2312 S 2325 S 2337 S 235 S 2362 S 2375 S 2387 S 24 S 2412 S 2425 S 2437 S 245 S 2462 S 2475 S 2487 S 25 S 2512 S 2525 S 2537 S 255 S 2562 S 2575 S 2587 S 26 S 2612 S 2625 S 2637 S 265 S 2662 S 2675 S 27 S 275 S 28 S 285 S 29 S 295 S 21 S S 48 S 49 S 41 S 411 S 412 S 413 S 414 S 415 S 416 S 417 S 418 S 42 S 422 S 423 S 424 S 425 S 426 S 427 S 428 S 429 S 43 S 431 S 432 S 433 S 434 S 435 S 436 S 437 S 438 S 439 S 44 S 441 S 442 S 443 S 444 S 445 S 447 S 448 S 449 S 45 S 453 S 455 S 456 S 46 S 463 S 465 S 47 S 473 S 475 S 48 S 485 S 49 S 41 S 415 S 411 S 4115 S 412 S 4125 S 413 S 4135 S 414 S 4145 S 415 S 416 S 4165 S 417 S 4175 S 42 S 425 S

50 laronpolyseal ouble cting Piston Seal Ring laron Ring Seals are designed as high pressure, low friction oubleacting piston seals for use in heavy duty hydraulic cylinders. The seals high pressure resistance makes it suitable for use in heavy duty applications where shock loads and pressure spikes occur, as found in mobile plant equipment. The inclusion of radial grooves on the P.T.F.E. element allows rapid response to bidirectional pressure changes. Standard materials are Bronze Filled P.T.F.E. Outer Ring with a Nitrile ORing Energiser but both the outer sealing element and the energiser are available in a wide range of high performance materials to suit a variety of applications. The application parameters should be carefully considered prior to selecting suitable materials from the tables. onsult laron for further advice. Temp. 54 to 2 ependent upon ORing Material used Pressure upto 8 bar Velocity upto 15m/s These range parameters are maximum conditional values Optimum service conditions are affected by temperature, speed pressure, surface finish and extrusion gaps. Refer to ppendix 1 section for further information. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp. range Temp. range 3 to 8 8 to 12 4bar 35 bar iametral learance F shown in the graph to the right is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures up to 8. The use of a suitably selected laron bearing ring will effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability of the seal. The maximum seal extrusion gap should be calculated allowing for all tolerances, movement and cylinder expansion. For pressures > 4 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for ylinder bore, f8 for piston diameter and P.T.F.E tape seating diameter. The full range of diameters applicable to the Standard and Light uty Sections are shown in the table below Housing ylinder Bore Section Width Standard Light (/1) to to

51 laronpolyseal ouble cting Piston Seal Ring When ordering, prefix the size reference with the style required and use the suffix shown in the material application tables. e.g. Ring Standard section in Bronze filled material for 7mm diameter 7/B Ring Light duty section in Glass filled material for 7 mm diameter 7/1G For ORing energiser materials other than Nitrile, use suffix shown in material table. e.g Flourocarbon material (FKM), 7/B/FKM For surface finish and lead in chamfers refer to the illustration below. For Housing dimensions and tolerances refer to the table of recommended sizes, and ppendix 4 for value of tolerance symbols. For F/2 values see note and tables For E/2 values refer to P.T.F.E. Guide Tape For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix

52 laronpolyseal ouble cting Piston Seal Ring Nominal imensions & Machining Tolerances Nominal imensions & Machining Tolerances laron Part No. 7/1B 75/1B 8/1B 85/1B 9/1B H9 h9 L 1 S laron H9 L R 1 F/2 h9 1 S R +.2 Ø Nom +.2 Nom 1 Ød Ø 1 1. Max Max Part No. 1 Ød 1. Max Sec /B 28/B 29/B 3/B 32/B Sec F/2 Max /1B 1/1B IMENSIONS IN BOL TYPE ONFORM TO ISO : /1B /1B /1B /1B /1B /1B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B /B 23/B 24/B 25/B 26/B

53 laronpolyseal Section B Single cting Piston Seals B

54 laronpolyseal Single cting Piston Seal P LRON STYLE P is designed with a symmetrical profile for use as a single acting piston or rod seal. The seal is a precision moulded Nitrile rubber sealing element with a bonded fabric reinforced base to resist extrusion. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style P is produced with radial grooves incorporated into the top of the seal on the pressure side. This innovative design ensures a rapid energisation of the seal without excessive end float and resultant wear. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS F (mm) Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Rod applications see Section. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B11

55 laron P 7847 P 9463/1 P 9463/2 P 9847 P 987 H laronpolyseal Single cting Piston Seal P Nominal imensions & Machining Tolerances js11 Ø 1 Ød L Nominal S Min Max R P 1262/1 P 1266 P 127 P 1278 P P 117 P 1178 P 1178/1 P P 11878/ P 11886/1 P 11886/2 P P P 12998/ P P 14111/1 P 14911/1 P P / P P /1 P P P P /1 P /1 P /1 P /5 P / P P P P /1 P / P P /2 P /3 P P B12

56 laron H1 laronpolyseal Single cting Piston Seal P Nominal imensions & Machining Tolerances js11 Ø 1 Ød L 1 Nominal Sec. S Min Max R 1 P /2 P P /3 P P / P P /3 P /1 P /2 P / P P /1 P P P / P /4 P P P /2 P P P P P P / P /3 P /1 P /2 P P P /1 P P /1 P P P /1 P P P /1 P P P P P P / B13

57 laron H1 laronpolyseal Single cting Piston Seal P Nominal imensions & Machining Tolerances js11 Ø 1 Ød L 1 Nominal Sec. S Min Max R 1 P P /1 P P P / P /1 P P P P P P P /2 P P 66959/ B14

58 laronpolyseal Single cting Piston Seal P Imperial LRON STYLE P is designed with a symmetrical profile for use as a single acting rod or piston seal. The seal is a precision moulded Nitrile rubber sealing element with a bonded fabric reinforced base to resist extrusion. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style P is an effective seal over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar F (mm) ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Rod application see section. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B21

59 laronpolyseal Single cting Piston Seal Imperial P laron H1 Ø 1 Nominal imensions & Machining Tolerances js11 Ød L 1 Nominal Sec. S Min Max R 1 P 5625 P 6231 P 6237 P 7537 P P 8143 P 875 P 8762 P 9356 P P 175 P 1975 P P P P P 12575/1 P 12575/2 P P P 1251/1 P P P 13787/1 P P P P 1587 P 1598 P P 151/1 P P P 1621 P P P /1 P /2 P P / P 1751 P P P P / B22

60 laronpolyseal Single cting Piston Seal P Imperial laron H 1 Ø 2 Nominal imensions & Machining Tolerances js11 Ød L 1 Nominal Sec. S Min Max R 1 P /2 P P P /1 P / P /3 P P 18715/1 P P 2137/ P 2137/2 P 2137/3 P 2137/4 P 2148 P P 215/1 P 215/4 P 2162/2 P 21215/1 P 21215/ P P /1 P /2 P P P P /1 P /2 P P P 2372 P P P P 25187/ P 25187/3 P P 252 P 252/1 P 252/ P P 2622 P 2622/2 P 2622/3 P B23

61 laronpolyseal Single cting Piston Seal P Imperial laron H 1 Ø 2 Nominal imensions & Machining Tolerances js11 Ød L 1 Nominal Sec. S Min Max R 1 P P /1 P 2752 P 2752/1 P 2752/ P P P P 2872 P P P P 32 P 3212 P P 3225/1 P 3225/2 P 3237 P 325 P P P P 31225/1 P P 32525/ P 32525/2 P 32525/3 P P P P P /1 P 3525 P P 35275/ P 35275/3 P P 353 P P P 3623 P P 3753 P 3753/1 P 3753/ B24

62 laronpolyseal Single cting Piston Seal P Imperial laron H 1 Ø 2 Nominal imensions & Machining Tolerances js11 Ød L 1 Nominal Sec. S Min Max R 1 P P P P 43 P 43/ P 4325/1 P 4325/2 P 435 P P P P 42535/1 P 4535/1 P 4535/2 P 4535/ P P 45375/1 P 454 P P / P /1 P /2 P P 4874 P P 54 P 5425 P 5254 P P P 5545 P 555 P P 65 P P /1 P /3 P P 6555 P P 7575 P 76 P 7625 P P B25

63 laronpolyseal Single cting Piston Seal P Imperial laron H 1 Ø 2 Nominal imensions & Machining Tolerances +.25 js11 + Ød 1 L 1 1. Nominal Sec. S Min Max R 1 P P B26

64 laronpolyseal Single cting Piston Seal GP Imperial LRON STYLE GP is designed with a symmetrical profile for Piston or Rod applications. The seal is a precision moulded Nitrile rubber with a fabric reinforced base to resist extrusion. esigned with initial radial interference to effect lowpressure sealing, the seal is progressively energised at higher pressures thereby increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style GP is designed to provide effective low pressure sealing through distortion of the lips rather than squeeze. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 section for further information. Maximum iametral learance F Pressure Bar 5 4 Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS F (mm) Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Rod application see section. Style GP is designed for use on a split piston and may be used with laron Seal Retainer Style PSR. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B31

65 laronpolyseal Single cting Piston Seal GP laron H 1 Ø 1 Nominal imensions & Machining Tolerances js11 Ød L 1 Nominal Sec. S Min hamf. Max R 1 GP GP GP GP27922 GP GP GP37248 GP GP GP GP B32

66 laron GP 151 GP 215 GP 215/1 GP GP 2372/1 H 1 Ø laronpolyseal Single cting Piston Seal GP Nominal imensions & Machining Tolerances Imperial js Nominal Min Max + Sec. hamf. Ød 1 S L 1.93 R 1.1 GP 2622/1 GP 3237 GP 32525/ B33

67 laronpolyseal Single cting Piston Seal PE LRON STYLE PE is designed for use as a single acting Piston seal. The seal is a precision moulded Nitrile rubber sealing element with a fabric reinforced base to resist extrusion. Style PE also has the added benefit of a clip on POM antiextrusion ring. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style P is produced with radial grooves incorporated into the top of the seal on the pressure side. This innovative design ensures a rapid energisation of the seal without excessive end float and resultant wear. Style P is an effective design over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to appendix 1 for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Rod application see section. Style PE is designed to be fitted onto a spit and may be used together with laron Style PSR retainer. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B61

68 laron laronpolyseal Single cting Piston Seal PE Nominal imensions & Machining Tolerances H 1 js Nominal Min Max Ø 1 Ød 1. S R 1 L 1 PE PE PE PE B62

69 laronpolyseal Single cting Piston Seal PEO Imperial laron Style PEO is designed for use as a single acting piston seal. The seal is a precision moulded Nitrile rubber sealing element with a bonded reinforced fabric base and an acetal back up ring to resist extrusion. The acetal back up ring allows larger clearances and higher pressures. The seal is designed with initial radial interference to effect low pressure sealing. t higher pressures the seal is energised thus increasing sealing. The rubberised fabric header has the advantage of retaining fluid within its surface thus reducing both friction and wear. Style PEO is an effective seal over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PEO is designed to be fitted onto a split piston, and may be used with a laron Style PSR retainer. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B71

70 laron H1 laronpolyseal Single cting Piston Seal PEO Nominal imensions & Machining Tolerances js Nominal Sec. Imperial Ø 1 Ød 1 L 1 S R 1 Min Max PEO 162 PEO PEO 12575/1 PEO 151 PEO PEO PEO 2137/1 PEO 2137/2 PEO 215 PEO PEO PEO 2752/1 PEO 2752/2 PEO 3225/2 PEO 32525/ PEO 353 PEO 3623 PEO 4325/1 PEO 435 PEO 4535/ PEO 54 PEO 76 PEO 7625 PEO B72

71 laronpolyseal Single cting Piston Seal GPE laron Style GPE is designed for use as a single acting piston seal. The seal is a precision moulded Nitrile rubber sealing element with a proportional bonded reinforced fabric base, and an acetal back up ring to resist extrusion. The acetal antiextrusion ring allows larger clearances and higher pressures. Style GPE is designed to provide effective low pressure sealing through distortion of the lips rather than squeeze. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. The seal is designed with initial radial interferance to effect low pressure sealing. The rubberised fabric header has the advantage of retaining fluid within its surface thus reducing both friction and wear. Style GPE is an effective seal over a wide range of applications. ontinuous operating temperature for various fluids Maximum Pressure NBR Rubber IN Hydraulic Fluid escription Max Speed Temp. Range H Mineral oil without additives 1 m/s 3 to 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load Bar HLP Mineral oil as HLP but with detergents and dispersants Bar HV Mineral oil as HLP plus improved viscosity temp. 1 These range perameters are Maximum simultaneous conditions. HF E Emulsions of mineral oil in water. Water content 895% 55 Optimum service conditions are affected by temperature, speed, HF S Synthetic oil in water. Water content 895% 55 pressure, surface finish and extrusion gaps. HFB Emulsions of water in mineral oil. Water content 4% 6 Refer to ppendix 1 for further information. HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style GPE is designed to be fitted onto a split piston and may be used with laron Style PSR retainer. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B81

72 laron H 1 laronpolyseal Single cting Piston Seal GPE Nominal imensions & Machining Tolerances js11 Ø 1 Ød L 1 Nominal Sec. S Min hamf. Max R 1 GPE GPE /2 GPE GPE /1 GPE / GPE /1 GPE GPE GPE GPE GPE /3 GPE B82

73 laron H 1 laronpolyseal Single cting Piston Seal GPE Imperial Nominal imensions & Machining Tolerances js11 Ø 1 Ød L 1 Nominal Sec S Min hamf. Max R 1 GPE GPE GPE 151 GPE 1621 GPE GPE GPE /2 GPE 2137/1 GPE GPE GPE GPE 25187/1 GPE 2622 GPE 2752 GPE 2752/ GPE GPE 3225/1 GPE 32525/1 GPE GPE GPE 353/1 GPE GPE 3623/1 GPE 4325/1 GPE 42535/ GPE GPE 54 GPE 65 GPE B83

74 laronpolyseal Single cting Piston Seal PW Imperial esigned for use on split pistons, the seal is a precision moulded rubber element with a reinforced fabric base. The seal is fitted with Polyacetal antiextrusion wear rings on the O.. to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style PW has proven to be effective over a wide range of applications. Maximum Pressure ontinuous operating temperature for various fluids NBR Rubber Max Speed Temp. Range IN Hydraulic Fluid escription m/s 3 to 1 H Mineral oil without additives Bar HL Mineral Fluid with anti corrosion and anti ageing additives Bar HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 These range perameters are Maximum simultaneous conditions. HV Mineral oil as HLP plus improved viscosity temp. 1 Optimum service conditions are affected by temperature, speed, HF E Emulsions of mineral oil in water. Water content 895% 55 pressure, surface finish and extrusion gaps. HF S Synthetic oil in water. Water content 895% 55 Refer to ppendix 1 for further information. HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 Maximum iametral learance F HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PW is designed to be fitted onto a split piston and may be used with laron seal retainer Style PSR. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B91

75 laron H 1 js 11 Ø 1 Ød 1 laronpolyseal Single cting Piston Seal PW Nominal imensions & Machining Tolerances js 1 js 11 Ød 2 Ød L L 2 Imperial Nominal S Min Max R 1 Max R 2 PW 162 PW 12575/2 PW 151 PW PW PW 2137/1 PW 2137/2 PW 2137/3 PW PW PW PW 252 PW 2752 PW 2752/1 PW 2752/ PW 3225/1 PW 3225/2 PW PW 32525/1 PW PW PW 4325/1 PW 4535/1 PW 54 PW PW B92

76 laronpolyseal Single cting Piston Seal GPW Imperial laron Style GPW is designed for use as a single acting piston seal The seal is a precision moulded Nitrile rubber sealing element with a proportional bonded reinforced NBR header and an acetal bearing ring to resist extrusion. The acetal bearing ring resists extrusion of the seal to allow greater clearances and higher pressures, and provides bearing support for the piston preventing misalignment and metal to metal contact between piston and bore.style GPW is designed to provide effective low pressure sealing through distortion of the lips rather than squeeze. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. Style GPW has proven to be effective over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style GPW is designed to be fitted onto a split piston and may be used with laron Style PSR retainer. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B11

77 laronpolyseal Single cting Piston Seal GPW laron Nominal imensions & Machining Tolerances H 1 js 11 js 1 js Nominal Ø 1 Ød 1 Ød 2 Ød 3 L 1 L 2 S Min Max R 1 Max R 2 GPW GPW /1 GPW /1 GPW /1 GPW GPW GPW GPW GPW GPW GPW GPW B12

78 laron laronpolyseal Single cting Piston Seal GPW Nominal imensions & Machining Tolerances H 1 js 11 js 1 js Nominal +. Ø 1 Ød 1 Ød 2 Ød 3 L 1 L 2 S Imperial Min Max R 1 Max R 2 GPW GPW GPW 151 GPW 1621 GPW GPW GPW /2 GPW 2137/1 GPW GPW GPW GPW 2622 GPW 2752 GPW 2752/2 GPW GPW 3225/1 GPW GPW GPW GPW 4325/ GPW 42535/1 GPW GPW 54 GPW 65 GPW B13

79 laronpolyseal Single cting Piston Seal PW.../L Imperial LRON STYLE PW.../L is a precision moulded Nitrile rubber with a fabric reinforced base. Produced with initial radial interference to effect lowpressure sealing, the seal is progressively energised at higher pressures thereby increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. The full width polyacetal bearing ring resists extrusion of the seal to allow greater clearances and higher pressures, and provides bearing support for the piston preventing misalignment and metal to metal contact between piston and bore. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 section for further information. Pressure Bar F (mm) ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PW/L is designed to be fitted onto a split piston and may be used with laron seal retainer Style PSR.For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B111

80 laron H 1 js 11 Ø 1 Ød 1 laronpolyseal Single cting Piston Seal PW.../L Nominal imensions & Machining Tolerances js 1 js 11 Ød 2 Ød L 1 Imperial +.4 Nominal Min Max. L 2 S R 1 R 2 PW 162/L PW 12575/1L PW 12575/2L PW 151/L PW 151/1L PW /L PW 2137/1L PW 2137/2L PW 2137/3L PW 2137/4L PW /L PW /L PW 25187/L PW 25187/1L PW 25187/3L PW 2622/L PW 2622/2L PW 2622/3L PW 2752/L PW 2752/2L PW 3225/L PW 3225/1L PW 3225/2L PW 32525/L PW 32525/1L PW 32525/2L PW 32525/3L PW 35275/L PW 35275/1L PW 35275/3L PW 3623/L PW 3753/L PW 3753/2L PW 4325/1L PW 42535/1L PW 4535/1L PW 4535/2L PW 4535/3L PW /2L PW 54/L PW 5545/L PW 65/L PW 6555/L PW 76/L B112

81 laronpolyseal Single cting Piston Seal PU Imperial The laron style PU is a symmetrical profiled lip seal manufactured in a high performance grade of Polyurethane and is suitable for both piston and rod sealing. The sealing lips are machine trimmed to ensure dimensional consistency and good low pressure sealing. Polyurethane exhibits outstanding abrasion and extrusion resistance. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed,pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Pressure Bar 5 4 ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based F mm Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Refer to section for rod application. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. B121

82 laronpolyseal Single cting Piston Seal PU laron H1 Ø 1 Nominal imensions & Machining Tolerances js Ød 1 L 1 Nominal L 2 Nominal S Min Max. R 1 PU 7847 PU 7855 PU 8663 PU 9855 PU 9863 PU 987 PU 1263 PU 127 PU 1178 PU 1178/ PU 1186 PU PU PU PU PU 12998/1 PU 12998/2 PU PU 13798/1 PU 13798/ PU PU PU PU PU PU /1 PU PU PU PU PU PU /1 PU PU PU PU PU /2 PU /3 PU PU / PU PU PU /1 PU PU B122

83 laronpolyseal Single cting Piston Seal PU laron H1 Ø 1 Nominal imensions & Machining Tolerances js Ød 1. L 1 Nominal L 2 Nominal S Min Max. R 1 PU /1 PU PU PU PU / PU PU PU /1 PU /2 PU / PU PU /2 PU PU /1 PU PU PU /1 PU PU /3 PU / PU /2 PU PU PU PU PU PU /1 PU PU PU PU /1 PU PU /1 PU PU / PU PU /1 PU PU PU PU PU PU PU PU B123

84 laronpolyseal Single cting Piston Seal Imperial PU laron H1 Ø 1 Nominal imensions & Machining Tolerances js Ød 1 L 1 Nominal L 2 Nominal S Min Max. R 1 PU 5631 PU 162 PU 162/1 PU PU PU PU PU PU PU PU 2137/1 PU PU PU PU / PU 2515 PU PU 2622 PU 2622/1 PU PU 2752 PU PU 3225 PU 3237 PU PU PU PU 3525 PU PU PU 3623/1 PU 3753 PU PU 43 PU PU PU PU 4535 PU PU PU PU 6537 PU B124

85 laronpolyseal Single cting U Piston Seal PU.../P The laron style PU.../P is an asymmetrical profiled lip seal manufactured in a high performance grade of Polyurethane and is suitable for piston sealing. The sealing lips are machine trimmed to ensure dimensional consistency and good low pressure sealing. Polyurethane exhibits outstanding abrasion and extrusion resistance. The offset lip design allows rapid energization of the seal without excessive axial movement. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to appendix 1 for further information. Maximum iametral clearance F Pressure Bar 5 ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal F mm For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. For F/2 values see note & table For E/2 see bearing housing B131

86 laronpolyseal Single cting U Piston Seal PU.../P laron H9 Ø 1 Nominal imensions & Machining Tolerances js Ød 1 L 1 Nominal L 2 Nominal S Min Max. R 1 PU 12598/P PU /P PU /P PU /P PU /P B132

87 laronpolyseal Single cting Piston Seal FP Imperial laron Style FP single acting piston seal is manufactured from fabric reinforced Nitrile Rubber suitable for mineral based hydraulic oils and water soluble fluids. The Fabric cup is a non preferred design for modern applications, but is available to meet existing design requirement within the industry. Style FP may also be used 'back to back' to form a double acting arrangement. ` Temp. range 3 to 1 Max Pressure 175Bar (25psi) Linear Speed m/sec.5 These Range parameters are Maximum Values Optimum service conditions are affected by temperature, speed,pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. iametrical learance 'F' is calculated as the maximum permissable extrusion gap, allowing for movement due to side load, tolerances and cylinder expansion. Pressure (Bar) Gap F (mm) ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. It is essential to apply a controlled squeeze to the base of the cup to avoid distortion of the heal and lip. location spigot of length L 1 and top plate must be used to avoid excessive wear and premature failure. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. B141

88 laron H 11 laronpolyseal Single cting Piston Seal FP Nominal imensions & Machining Tolerances Ø 1 Ød 1 Nom. epth Fabric up L 3 Nom. Base Thickness L L 1 Min FP 15755/R FP 23678/F FP 29978/1F FP 29978/F FP 33878/F FP 35475/F FP 37478/F B142

89 laron H 11 laronpolyseal Single cting Piston Seal FP Nominal imensions & Machining Tolerances +..5 Ø 1 Ød 1 Nom. epth Fabric up L 3 Nom. Base Thickness L 2 Imperial +..5 L 1 Min FP 6228/F FP 6228/FB FP 137/F FP 12537/F FP 13743/F FP 13743/FB FP 155/F FP 155/FB FP 1625/F FP 16253/F FP 16256/F FP 1685/F FP 1755/F FP 17556/F FP 17562/3R FP 17562/4F FP 17862/F FP 237/F FP 237/FB FP 25/F mm FP 25/R FP 25/RB FP 275/2F FP 275/F FP 281/F mm FP 21262/F FP 2255/2F FP 22562/F FP 22575/1F FP 22575/1FB FP 22575/1F FP 23775/1F FP 23775/1FB FP 23775/1F FP 23775/1F mm FP 23775/1FE FP 23775/1FS FP 23775/F FP 2562/F FP 2562/FB FP 2562/F FP 2587/F FP 26275/F FP 26275/FB FP 26275/F mm B143

90 laron H 11 laronpolyseal Single cting Piston Seal FP Nominal imensions & Machining Tolerances +..5 Ø 1 Ød 1 Nom. epth Fabric up L 3 Nom. Base Thickness L 2 Imperial +..5 L 1 Min FP 26275/F FP 26275/FE FP 26281/F FP 2621/R FP 26475/F FP 27562/1F FP 27562/F FP 27575/F FP 27575/FB FP 27575/F FP 28762/F FP 28787/F FP 29162/F FP 362/F FP 362/FB FP 362/F FP 362/F FP 375/F FP 375/FB FP 375/F FP 381/F FP 31275/F FP 31275/FB FP 31275/FS FP 32562/F mm FP 32575/1F FP 32575/F FP 32575/FB FP 32575/F FP 32575/F mm FP 32581/1F FP 32581/F FP 3251/2R FP 32875/F FP 3575/F FP 3575/FB FP 3575/F FP 3587/F FP 3625/F FP 36268/F FP 36268/FB FP 36275/F FP 36275/FB FP 36275/F FP 37562/F B144

91 laron H 11 laronpolyseal Single cting Piston Seal FP Nominal imensions & Machining Tolerances +..5 Ø 1 Ød 1 Nom. epth Fabric up L 3 Nom. Base Thickness L 2 Imperial +..5 L 1 Min FP 37575/1F FP 37575/1FB FP 37575/F FP 3875/F FP 38775/F mm FP 38775/FB FP 38781/F FP 3871/1R FP 475/F FP 475/FB mm FP 475/F FP 475/F FP 475/FS FP 475/R FP 41287/F FP 42562/F FP 42575/F FP 42575/FB FP 4575/F FP 47581/F FP 4751/1R FP 4751/F FP 575/F FP 575/FB FP 575/F mm FP 587/F FP 51/F FP 51/FS FP 5255/F FP 5255/FB mm FP 5575/R FP 57581/F FP 675/F FP 687/F FP 61/F mm FP 61/FS FP 651/2F FP 651/2FB FP 651/2F FP 651/2F FP 787/F FP 787/R FP 71/1F FP 71/F FP 71/R mm FP 8251/R FP 8251/RB B145

92 laronpolyseal Single cting Piston Seal 851 The laron style 851 is a heavy duty single acting seal for hydraulic or pneumatic piston applications. esigned as a high pressure low friction seal for use singly, in tandem sealing arrangements or back to back for double acting applications without pressure lock. Standard materials are Bronze filled P.T.F.E with a Nitrile ORing Energiser but both the outer sealing element and the energiser are available in a wide range of high performance materials to suit a variety of applications. The application parameters should be carefully considered prior to selecting suitable materials from the tables. onsult laron for further advice. Temp. 54 to 2 (ependent upon ORing Material used See ppendix 2) Pressure upto 8 bar Velocity upto 15m/s These range parameters are maximum conditional values Optimum service conditions are affected by temperature, speed pressure, surface finish and extrusion gaps.. Refer to ppendix 1 section for further information. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp. range Temp. range 3 to 8 8 to 12 4bar 35 bar iametrical learance F shown in the graph to the right is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures upto 8. The use of a suitably selected laron bearing ring will effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability of the seal. The maximum seal extrusion gap should be calculated allowing for all tolerances, movement and cylinder expansion. For pressures > 4 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for ylinder bore, f8 for piston diameter. The full range of diameters applicable to the "Standard ", "Light" and "Heavy" uty Sections shown in the table below Housing pplicable Bore dia. Section Width Standard uty Light uty (/1) Heavy uty (/2) to to to to to to to to to to to to 28 6 to to 58 2 to B161

93 laronpolyseal Single cting Piston Seal 851 When ordering, prefix the size reference with the style required and use the suffix shown in the material application tables ppendix 2. e.g. 851 Standard section in Bronze filled material for 7mm diameter 8517/B 851 Light duty section in Glass filled material for 7 mm diameter 8517/1G 851 Heavy duty section in arbon filled material for 7 mm diameter 8517/2 For ORing energiser materials other than Nitrile, use suffix shown in material table. ppendix 2 e.g Flourocarbon material (FKM), 8517/B/FKM For surface finish and lead in chamfers refer to the illustration below. For Housing dimensions and tolerances refer to the table of recommended sizes and ppendix 4 for value of tolerance symbols For F/2 values see note & table For E/2 refer to Guide Tape page For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix 3 B162

94 laronpolyseal Nominal imensions & Machining Tolerances laron Nominal imensions & Machining Tolerances laron 8511/B 85112/B 85114/B 85115/B 85116/B 85118/B 8512/B 8512/1B 85122/B 85125/B 85125/2B 85128/B 8513/B 85132/B 85132/1B 85135/B 85136/B /B 8514/B 8514/1B 85142/B 85145/B 85148/B 8515/B 8515/2B 85152/B 85155/B 8516/B 85163/B 85163/1B 85165/B 8517/B 8517/1B 85175/B 8518/B 8518/1B 85185/B 85185/2B 8519/B 8519/2B 85195/B 85195/2B 8511/B 8511/1B 8511/2B 85115/B 85115/2B 85111/B 85111/2B /B /2B 85112/B 85112/2B /B /2B 85113/B 85113/2B /B /2B 85114/B 85114/2B 85115/B 85115/2B 85116/B 85116/2B 85117/B 85117/2B 85118/B 85118/2B 85119/B 85119/2B 8512/B 8512/1B 85121/B 85122/B 85123/B 85124/B 85125/B 85125/2B 85126/B 85128/B 8513/B 85132/B 85132/1B 85135/B 85136/B 85138/B 8514/B 85142/B 85145/B 85148/B 8515/B H9 d 1 h9 L S Nom Sec R 1 Max F/2 Max 1 H9 d 1 h9 L S Nom Sec R 1 Max F/2 Max Single cting Piston Seal 851 imensions in bold type conform to ISO :1988 Intermediate sizes upto 58mm are available, incl. Imperial B163

95 laronpolyseal Piston Seal Retaining Ring PSR Imperial laron Style PSR retainer is designed to retain single acting piston seals. The retainer is manufactured from cetal (POM) and is profiled to fit into a groove on the piston. The retainer is split with two holes similar to a circlip to facilitate fitting with circlip pliers. The retainer provides a simple housing design solution for all single acting piston seals. ontinuous operating temperature for various fluids Temp. range 3 to 1 Linear Speed m/sec 5 Optimum service conditions are affected by temperature, speed, side load and surface finish. Refer to ppendix 1 for further information. POM Polyacetal IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based 8 HF S hlorinated hydrocarbon based 8 HF T Mixtures of HF R and HF S 8 HEPG Polyglycol based 1 HETG Vegetable Oil based 6 HEES Fully synthetic ester based 1 For surface finish and recommended lead in chamfers refer to the illustration below. For seal housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PSR snap fits into a groove and may be fitted with standard circlip pliers. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. B181

96 laron laronpolyseal Piston Seal Retaining Ring PSR Refer to seal section Ø 1 Ød 1 Nominal imensions & Machining Tolerances Nominal S L T L 2 PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR B182

97 laron PSR PSR PSR 151 PSR 1621 PSR laronpolyseal Piston Seal Retaining Ring Refer to seal section Ø 1 Ød PSR Nominal imensions & Machining Tolerances Nominal S L Imperial +..5 T L PSR PSR PSR 2137 PSR PSR PSR PSR PSR 2622 PSR 2752 PSR PSR 3225 PSR PSR PSR PSR PSR PSR PSR 3623 PSR /1 PSR PSR 4325/1 PSR PSR PSR PSR PSR 4754/1 PSR 54 PSR 5755/1 PSR 6756/1 PSR 8758/ B183

98

99 laronpolyseal Section Rod Seals

100 laronpolyseal Single cting Rod Seal P LRON STYLE P is designed with a symmetrical profile for use as a single acting rod or piston seal. The seal is a precision moulded Nitrile rubber sealing element with a fabric reinforced base to resist extrusion. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style P is produced with radial grooves incorporated into the top of the seal on the pressure side. This innovative design ensures a rapid energisation of the seal without excessive end float and resultant wear. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS F (mm) Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to appendix 4 for value of tolerance symbols. For Piston applications refer to section B. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 11

101 laron P 7847 P 9463/1 P 9463/2 P 9847 P 987 laronpolyseal Single cting Rod Seal P Nominal imensions & Machining Tolerances Js 11 f8 H9 L Ø 1 Ød 1 ØG Nominal Sec S Min Max R P 1262/1 P 1266 P 127 P 1278 P P 117 P 1178 P 1178/1 P P 11878/ P 11886/1 P 11886/2 P P P 12998/ P P 14111/1 P 14911/1 P P / P P /1 P P P P /1 P /1 P /1 P /5 P / P P P P /1 P / P P /2 P /3 P P

102 laron Js 11 laronpolyseal Single cting Rod Seal P f8 Ø 1 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 P /2 P P /3 P P / P P /3 P /1 P /2 P / P P /1 P P P / P /4 P P P /2 P P P P P P / P /3 P /1 P /2 P P P /1 P P /1 P P P /1 P P P /1 P P P P P P /

103 laron Js 11 laronpolyseal Single cting Rod Seal P f8 Ø 1 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 P P /1 P P P / P /1 P P P P P P P /2 P P 66959/

104 laronpolyseal Single cting Rod Seal P Imperial LRON STYLE P is designed with a symmetrical profile for use as a single acting Rod or Piston seal. The seal is a precision moulded Nitrile rubber sealing element with a fabric reinforced base to resist extrusion. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, so reducing friction and wear. Style P is an effective seal over a wide range of applications. 5 4 Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS F (mm) Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Piston applications refer to section B. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 21

105 laron Js11 Ø 1 Ød 1 laronpolyseal Single cting Rod Seal P f8 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Imperial Min Max R 1 P 5625 P 6231 P 6237 P 7537 P P 8143 P 875 P 8762 P 9356 P P 175 P 1975 P P P P P 12575/1 P 12575/2 P P P 1251/1 P P P 13787/1 P P P P 1587 P 1598 P P 151/1 P P P 1621 P P P /1 P /2 P P / P 1751 P P P P /

106 laron Js11 Ø 1 Ød 1 laronpolyseal Single cting Rod Seal P f8 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Imperial Min Max R 1 P /2 P P P /1 P / P /3 P P 18715/1 P P 2137/ P 2137/2 P 2137/3 P 2137/4 P 2148 P P 215/1 P 215/4 P 2162/2 P 21215/1 P 21215/ P P /1 P /2 P P P P /1 P /2 P P P 2372 P P P P 25187/ P 25187/3 P P 252 P 252/1 P 252/ P P 2622 P 2622/2 P 2622/3 P

107 laronpolyseal Single cting Rod Seal P Imperial laron Js11 Ø 1 f8 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 P P /1 P 2752 P 2752/1 P 2752/ P P P P 2872 P P P P 32 P 3212 P P 3225/1 P 3225/2 P 3237 P 325 P P P P 31225/1 P P 32525/ P 32525/2 P 32525/3 P P P P P /1 P 3525 P P 35275/ P 35275/3 P P 353 P P P 3623 P P 3753 P 3753/1 P 3753/

108 laronpolyseal Single cting Rod Seal P Imperial laron Js11 Ø 1 f8 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 P P P P 43 P 43/ P 4325/1 P 4325/2 P 435 P P P P 42535/1 P 4535/1 P 4535/2 P 4535/ P P 45375/1 P 454 P P / P /1 P /2 P P 4874 P P 54 P 5425 P 5254 P P P 5545 P 555 P P 65 P P /1 P /3 P P 6555 P P 7575 P 76 P 7625 P P

109 laronpolyseal Single cting Rod Seal P Imperial laron Js11 Ø 1 f8 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 P P

110 laronpolyseal Single cting Rod Seal GP Imperial LRON STYLE GP is designed with a symmetrical profile for Rod or Piston applications. The seal is a precision moulded Nitrile rubber with a fabric reinforced base to resist extrusion. esigned with initial radial interference to effect lowpressure sealing, the seal is progressively energised at higher pressures thereby increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style GP is designed to provide effective low pressure sealing through distortion of the lips rather than squeeze. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS F (mm) Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For Piston applications refer to section B. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 31

111 laron Js 11 laronpolyseal Single cting Rod Seal GP f8 Nominal imensions & Machining Tolerances H9 Ø 1 Ød 1 ØG L 1 Nominal S Min Max R 1 GP GP GP GP27922 GP GP GP37248 GP GP GP GP

112 laron Js 11 laronpolyseal Single cting Rod Seal GP f8 Ø 1 Ød 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Imperial Min Max R 1 GP 151 GP 215 GP 215/1 GP GP 2372/ GP 2622/1 GP 3237 GP 32525/

113 laronpolyseal Single cting Rod Seal PI laron Style PI is designed for use as a single acting rod seal. The seal is a precision moulded Nitrile rubber sealing element with a fabric reinforced base and an acetal back up ring to resist extrusion. The acetal back up ring allows larger clearances and higher pressures. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is progressively energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining fluid within its surface so reducing both friction and wear. Style P is produced with radial grooves incorporated into the top of the seal on the pressure side. This innovative design ensures a rapid energisation of the seal without excessive end float and resultant wear. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 section for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 41

114 laron Js 11 laronpolyseal Single cting Rod Seal PI f8 Ø 1 d 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 PI 9463 PI 1678 PI 117 PI 1178 PI PI PI 12998/1 PI 12998/2 PI PI PI 14911/1 PI PI PI PI PI /2 PI PI PI PI PI PI /3 PI /1 PI /2 PI / PI /2 PI /3 PI PI /1 PI PI /1 PI /1 PI PI /1 PI / PI /1 PI PI PI PI PI PI /3 PI PI PI

115 laron Js 11 laronpolyseal Single cting Rod Seal PI f8 Ø 1 d 1 Nominal imensions & Machining Tolerances H9 ØG L 1 Nominal S Min Max R 1 PI PI PI PI PI PI PI PI PI PI / PI PI /1 PI PI PI PI PI PI /1 PI PI 66959/

116 laronpolyseal Single cting Rod Seal PEI Imperial LRON STYLE PEI is designed for use as a single acting Rod seal. The seal is a precision moulded Nitrile rubber sealing element with a bonded fabric reinforced base to resist extrusion. Style PEI also has the added benefit of a clip on POM antiextrusion ring for larger clearances or higher pressures. esigned with initial radial interference to effect low pressure sealing, at higher pressures the seal is progressively energised thus increasing the sealing force. Rubberised fabric has the advantage of retaining the sealing media within it s surface, thus reducing friction and wear. Style PEI is an effective design over a wide range of applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 51

117 laron Js 11 laronpolyseal Single cting Rod Seal PEI f8 Ø 1 Ød 1 Nominal imensions & Machining Tolerances H9 ØG +.25 L 1 Nominal S Imperial Min Max R 1 PEI 162 PEI 1975 PEI PEI 12575/1 PEI 12575/ PEI 1251 PEI 13787/1 PEI 1371 PEI PEI PEI 151 PEI 151/1 PEI 151/2 PEI PEI PEI PEI /1 PEI PEI PEI PEI /2 PEI 18715/1 PEI 18715/2 PEI 215 PEI 215/ PEI 2162/1 PEI 21215/1 PEI /1 PEI /2 PEI / PEI 2312 PEI PEI PEI PEI PEI 252/1 PEI PEI 2622 PEI 2752/1 PEI PEI 325 PEI 3625 PEI PEI 32525/1 PEI

118 laron Js11 laronpolyseal Single cting Rod Seal Imperial PEI f8 Ø 1 Ød 1 Nominal imensions & Machining Tolerances H9 ØG +.25 L 1 Nominal S Min Max R 1 PEI 3753 PEI PEI 42535/1 PEI 4754/1 PEI

119 laronpolyseal Single cting Rod Seal PVM & PV Imperial laron Style PV and PVM is a single acting rod or piston seal for medium to heavy duty applications. The assembly consists of a male and female header and a series of 'V' rings. The number of 'V' rings may be varied to alter the assembled height. The material is generally fabric reinforced NBR rubber, although style PVM incorporates an 'NBR only' 'V'ring to assist low pressure sealing. This is now a non preferred design, but it still has a place in application where difficult conditions prevail such as pressure surges and misalignment. Pressure Bar Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 7 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information F (mm).5 ontinuous operating temperature for various fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PV and PVM are designed to be fitted to a split gland or piston. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 61

120 laronpolyseal Single cting Rod Seal PVM laron H9 Ø 1 f8 Ød 1 H9 ØG Nominal imensions & Machining Tolerances +.2. L 1 L 2 Y Nominal S Min. Max. R 1 No. of fabric V rings No. of Rubber V rings PVM 1262 PVM 117 PVM PVM PVM PVM PVM PVM PVM PVM PVM PVM PVM B PVM PVM PVM PVM PVM PVM B PVM PVM PVM PVM PVM PVM PVM PVM PVM E PVM

121 laronpolyseal Single cting Rod Seal PV laron H9 Ø 1 f9 Ød 1 H9 ØG Nominal imensions & Machining Tolerances +.2. L 1 Nominal S Min. Max. R 1 No. of fabric V rings No. of Rubber V rings Effective depth of single Fabric V PV 9455 PV PV B PV PV B PV PV PV PV PV PV 24177B PV PV B PV PV PV B PV PV PV PV B PV PV PV PV 35275B PV PV B PV PV PV B PV PV B PV PV PV PV B PV PV PV PV PV B PV PV

122 laronpolyseal Single cting Rod Seal PV Imperial laron PV 95 PV 9562 PV 1175 PV 1175B PV H9 Ø f9 H9 Ød 1 ØG Nominal imensions & Machining Tolerances +.1. L Nominal S Min Max. R No. of fabric V rings No. of Rubber V rings Effective depth of single Fabric V PV PV PV 1371 PV PV PV 151 PV 151B PV PV 15616B PV PV PV PV B PV PV PV PV 2138 PV 2138B PV 215 PV 215B PV PV 21215B PV PV PV 21215F PV PV PV B PV PV PV E PV G PV PV PV B PV PV PV E PV 2372 PV PV 25175B

123 laronpolyseal Single cting Rod Seal PV Imperial laron H9 Ø 1 f9 Ød 1 H9 ØG Nominal imensions & Machining Tolerances +.1. L 1 Nominal S Min. Max. R 1 No. of fabric V rings No. of Rubber V rings Effective depth of single Fabric V PV 252 PV 252B PV 252/ PV 252 PV 252E PV 2622 PV 2622B PV 2622 PV 2622 PV PV 2752B PV PV PV B PV PV PV 32 PV 32B PV 3225 PV 3225B PV 3225 PV 3225 PV 3225F PV 325 PV 325B PV PV 33227B PV PV PV 32525B PV PV PV B PV PV PV PV PV 3623 PV 3753 PV 3753B PV 3753 PV 3753 PV PV 4325 PV 4325B PV 4337 PV 435 PV 435B PV PV

124 laronpolyseal Single cting Rod Seal PV Imperial laron H9 Ø 1 f9 Ød 1 H9 ØG Nominal imensions & Machining Tolerances +.1. L 1 Nominal S Min. Max. R 1 No. of fabric V rings No. of Rubber V rings Effective depth of single Fabric V PV PV 42535B PV PV PV PV 4535 PV PV PV 454 PV 454B PV 535 PV 54 PV 54B PV PV PV PV 65 PV 76 PV

125 laronpolyseal Single cting Rod Seal PS Imperial laron Style PS rod seal is a 3 piece assembly consisting of a Nitrile Rubber sealing element which is backed up by a tough Thermoplastic elastomer header complete with an cetal antiextrusion ring on the I.. The complete assembly forms a highly robust sealing unit for use in high pressure applications where shock loads and pressure spikes are present. This seal is widely used in the mobile plant industry and is also a modern replacement for common veepac seals. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 6 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PS is designed to be fitted into a split gland as shown in the illustration below. The seal can be supplied split to ease fitting if required. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 71

126 laron laronpolyseal Single cting Rod Seal PS Nominal imensions & Machining Tolerances +.25 f8 H9 Js11 Nominal. Section Ød 1 ØG Ø 1 S L 1 Min. Max. R 1 PS PS PS PS PS PS

127 laron laronpolyseal Single cting Rod Seal PS Nominal imensions & Machining Tolerances f8 H9 Js Nominal. Ød 1 ØG Ø 1 S L 1 Imperial Min. Max. R 1 PS PS 215 PS PS 252 PS PS

128 laronpolyseal Single cting Rod Seal EGS Imperial laron Style EGS rod seal is a 2 piece assembly consisting of a Nitrile Rubber sealing element complete with rubberised fabric reinforcement which is backed up by a tough Thermoplastic elastomer header. The complete assembly forms a robust sealing unit for use in high pressure applications where shock loads and pressure spikes are present. This seal is widely used in telescopic cylinder applications. Maximum Pressure Max Speed Temp. Range m/s 3 to Bar.15 4 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style EGS is designed to be fitted into a split gland as shown in the illustration below. The seal can be supplied split to ease fitting if required. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 81

129 laronpolyseal Single cting Rod Seal Nominal imensions & Machining Tolerances laron + ±.1 H9 ±.3 Max. Max. Ød 1 ØG Ø 1 EGS +.25 L 1 F Imperial Max. R 1 R 2 EGS 275 EGS 35 EGS 437 EGS 525 EGS EGS 731 EGS

130 laronpolyseal Single cting Rod Seal PU Imperial The laron style PU is a symmetrical profiled lip seal manufactured in a high performance grade of Polyurethane and is suitable for both rod and piston sealing. The sealing lips are machine trimmed to ensure dimensional consistency and good low pressure sealing. Polyurethane exhibits outstanding abrasion and extrusion resistance. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed,pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal F mm For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Refer to section B for piston applicaion. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 91

131 laronpolyseal Single cting Rod Seal PU laron Js 11 Ø 1 Nominal imensions & Machining Tolerances f8 H Ød 1 ØG L 1 Nominal L 2 Nominal S Min Max. R 1 PU 7847 PU 7855 PU 8663 PU 9855 PU 9863 PU 987 PU 1263 PU 127 PU 1178 PU 1178/ PU 1186 PU PU PU PU PU 12998/1 PU 12998/2 PU PU 13798/1 PU 13798/ PU PU PU PU PU PU /1 PU PU PU PU PU PU /1 PU PU PU PU PU /2 PU /3 PU PU / PU PU PU /1 PU PU

132 laronpolyseal Single cting Rod Seal PU laron Js 11 Ø 1 Nominal imensions & Machining Tolerances f8 H Ød 1 ØG L 1 Nominal L 2 Nominal S Min Max. R 1 PU /1 PU PU PU PU / PU PU PU /1 PU /2 PU / PU PU /2 PU PU /1 PU PU PU /1 PU PU /3 PU / PU /2 PU PU PU PU PU PU /1 PU PU PU PU /1 PU PU /1 PU PU / PU PU /1 PU PU PU PU PU PU PU PU

133 laronpolyseal Single cting Rod Seal PU Imperial laron Js 11 Ø 1 Nominal imensions & Machining Tolerances f8 H Ød 1 ØG L 1 Nominal L 2 Nominal S Min Max. R 1 PU 5631 PU 162 PU 162/1 PU PU PU PU PU PU PU PU 2137/1 PU PU PU PU / PU 2515 PU PU 2622 PU 2622/1 PU PU 2752 PU PU 3225 PU 3237 PU PU PU PU 3525 PU PU PU 3623/1 PU 3753 PU PU 43 PU PU PU PU 4535 PU PU PU PU 6537 PU

134 laronpolyseal Single cting Rod Seal PU.../F Imperial The laron style PU.../F is a symmetrical profiled lip seal manufactured in a high performance grade of Polyurethane and is suitable for both rod and piston sealing. The sealing lips are machine trimmed to ensure dimensional consistency and good low pressure sealing. Polyurethane exhibits outstanding abrasion and extrusion resistance. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based F mm Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 11

135 laronpolyseal Single cting Rod Seal PU.../F laron Js 11 Ø 1 Nominal imensions & Machining Tolerances f8 H Ød 1 ØG L 1 Nominal L 2 Nominal S Min Max. R 1 PU 8663/F PU 11878/1F PU 14178/F PU 14111/F PU /F PU /F PU /F PU /F PU /F

136 laron laronpolyseal Single cting Rod Seal PU.../F Imperial Nominal imensions & Machining Tolerances Js 11 f8 H9 +.1 Nominal Nominal Min Max.. Ø 1 Ød 1 ØG L 1 L 2 S R 1 PU 6231/F PU 8643/F PU 7537/F PU 7537/1F PU 8762/F PU 175/F PU /F PU /F PU /F PU 26168/F

137 laronpolyseal Single cting Rod Seal PU.../G Imperial The laron style PG.../G is an asymmetrical profiled lip seal designed for medium duty rod applications. Features include an outside diameter specifically designed for static face sealing and a robust inner lip for high performance sealing. Manufactured in a high performance grade of Polyurethane for outstanding abrasion and extrusion resistance combined with flexibility for ease of installation. European and Japanese standard housings are covered in this range. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal F mm For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

138 laron laronpolyseal Single cting Rod Seal PU.../G f8 H9 Js Ød 1 ØG Ø 1 L 1 Nominal imensions & Machining Tolerances Nominal L 2 Nominal S Min Max. R 1 PU 7447/G PU 1178/G PU 14111/G PU /G PU /1G PU /G PU /1G PU /G PU /G PU 28177/G PU /G PU /G PU /G PU /G PU 37255/G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /1G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G PU /G

139 laron laronpolyseal Single cting Rod Seal Imperial PU.../G f8 H9 Js Ød 1 ØG Ø 1. L 1 Nominal imensions & Machining Tolerances Nominal L 2 Nominal S Min Max. R 1 PU 16/G PU 1251/G PU /G PU 252/G PU /G PU /G PU 325/G PU /G PU /G PU 353/G PU /G PU 435/G PU 42535/1G PU /G PU 4624/G PU /G PU 61255/G PU /G PU 7565/G PU 87/G

140 laronpolyseal Single cting Rod Seal PG Imperial The laron style PG is an asymmetrical profiled lip seal designed for medium duty rod applications. Features include an outside diameter specifically designed for static face sealing and a robust inner lip with a secondary supporting sealing edge for high performance sealing. Manufactured in a high performance grade of Polyurethane for outstanding abrasion and extrusion resistance combined with flexibility for ease of installation. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar F mm ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in m ineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

141 laron laronpolyseal Single cting Rod Seal f8 H9 Js Ød 1 ØG Ø 1 L 1 PG Nominal imensions & Machining Tolerances Nominal L 2 Nominal S Min Max. R 1 PG 1424 PG 1622 PG 2533 PG 284 PG PG 34/1 PG 3242 PG 3545 PG 45 PG PG 56 PG 56/1 PG 565 PG 675 PG

142 laron laronpolyseal Single cting Rod Seal f8 H9 Js Ød 1 ØG Ø 1 L 1 PG Nominal imensions & Machining Tolerances Nominal L 2 Imperial Nominal S Min Max. R 1 PG 1125 PG PG /1 PG PG PG PG PG 152/1 PG 152 PG / PG PG 225 PG PG 253 PG PG

143 laronpolyseal Single cting Rod Seal PS The laron style PS is a symmetrical profiled semisolid seal designed for narrow section rod sealing and manufactured in a high performance grade of polyurethane. The sealing lips are machine trimmed to ensure dimensional consistency and good low pressure sealing whilst polyurethane exhibits outstanding abrasion and extrusion resistance providing a rod seal with a consistent operating performance. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar 5 4 ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal F mm For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

144 laron laronpolyseal Single cting Rod Seal f8 H9 H Ød 1 ØG Ø 1. L 1 PS Nominal imensions & Machining Tolerances Nominal L 2 Nominal S Min Max. R 1 PS 2228 PS 3845 PS 5345 PS

145 laronpolyseal Single cting Rod Seal PU.../OR Imperial The laron style PU../OR is a symmetrical profiled lip seal designed for rod sealing, manufactured in a high performance grade of Polyurethane and fitted with an NBR ORing. This special feature guarantees the preloading of the sealing lips at no load and low pressures whilst polyurethane provides outstanding abrasion and extrusion resistance. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 25 Bar.15 4 Bar 35 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Pressure Bar F mm ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

146 laron f8 Ød 1 H9 ØG laronpolyseal Single cting Rod Seal PU.../OR H1 Ø 1 Nominal imensions & Machining Tolerances L 1 Nominal L 2 Nominal S Min Max. R 1 PU /FOR PU /OR PU /1OR PU /OR PU /OR PU /OR PU /OR PU /OR

147 laron f8 Ød 1 H9 ØG laronpolyseal Single cting Rod Seal PU.../OR Nominal imensions & Machining Tolerances H1 Ø L 1 Nominal L 2 Imperial Nominal S Min Max. R 1 PU 25187/OR PU 2622/OR PU 2752/OR PU 3753/OR PU 3753/1OR PU 4624/OR PU 6525/OR

148 laronpolyseal Single cting Rod Seal PUI.../OR laron style PUI.../OR is a Polyurethane Useal incorporating an ORing energiser. This guarantees the preloading of the seal lips for low pressure sealing, thus optimising seal performance. Polyurethane provides outstanding abrasion and wear resistance ensuring that the seal operates in the most arduous conditions. The antiextrusion ring which is energised at high pressures, increases the maximum working pressure as well as protecting the seal against pressure spikes. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 3 Bar.15 5 Bar 45 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

149 laron laronpolyseal Single cting Rod Seal PUI.../OR f8 H9 H Ød 1 ØG Ø 1 L 1 Nominal imensions & Machining Tolerances Nominal L 2 Nominal S Min Max. R 1 PUI /OR PUI /OR PUI /OR PUI /OR

150 laronpolyseal Single cting Rod Seal PGI.../OR The seal is an asymmetric Polyurethane Useal incorporating an NBR energiser preloading the seal lips thus improving sealing at low pressures. The secondary sealing lip assists sealing, reduces friction and helps to protect the main lip from damage caused by dirt ingression. The ntiextrusion ring which is energised at high pressures increases the maximum working pressure as well as protecting the seal against pressure spikes caused by shock loads. Polyurethane exhibits outstanding abrasion and wear resistance ensuring that the seal operates in the most arduous conditions. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 3 Bar.15 5 Bar 45 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids Polyure thane / Nitrile om pos ite IN Hydra ulic Fluid escription H Mine ral oil with out additiv es 1 HL Mine ral Fluid with anti c orrosion an d anti ag eing additives 1 HL P Mine ral oil as HL p lus additives re ducin g wea r, r aising load 1 HL P Miner al o il as HLP b ut with de tergents and dispe rsants 1 HV Min era l oil as HL P plus impr oved viscosity tem p. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthe tic oil i n water. Water conte nt 895% 4 HFB Emulsions of wate r in mineral oil. Wate r conte nt 4 % 4 HF queous polyme r solu tions. Wate r con tent 35 % NS HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HE TG Vegetable Oil ba se d 6 HEES Fully synthetic e ster ba se d NS Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

151 laronpolyseal Single cting Rod Seal PGI.../OR laron f8 Ød 1 Nominal imensions & Machining Tolerances H1 H Ø 1 ØG L 1 Nominal L 2 Nominal S Min Max. R 1 PGI 658/OR PGI 785/OR PGI 759/OR PGI 895/OR PGI 851/OR PGI 915/OR PGI 9511/OR PGI 1115/OR

152 laronpolyseal Single cting Rod Seal HBI laron style HBI is a single acting seal for gland applications using the same housing designs as Style S6. The sealing element is manufactured in Polyurethane, with an cetal antiextrusion ring. esigned as a high pressure, low friction seal for use in second generation tandem sealing arrangements. The HBI seal is used on the pressure side, and a 'low leak' but higher friction seal on the nonpressure side to collect the oil film during the positive stroke. This type of arrangement is used where both low friction and low leakage are required. The seals high pressure resistance makes it suitable for use in heavy duty applications where shock loads and pressure spikes occur, as found in mobile plant equipment. Maximum Pressure Max Speed Temp. Range Temp. Range m/s 4 to 8 4 to Bar 3 Bar.15 5 Bar 45 Bar These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 1 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

153 laronpolyseal Single cting Rod Seal HBI laron f8 Ød 1 Nominal imensions & Machining Tolerances H9 Ø L 1 Nominal HBI 65 HBI 7 HBI 75 HBI 8 HBI HBI 9 HBI 95 HBI Items in BOL are to suit ISO74252 housings. 172

154 S6 laronpolyseal Single & ouble cting Rod Seals S6 laron omposite Seals Style S6 are designed as high pressure, low friction Singleacting Rod seals for use in heavy duty hydraulic and pneumatic cylinders. laron omposite Seals Style 741 and Style 751 are designed as high pressure, low friction oubleacting Rod seals using the same housing designs as Style S6. (These styles must be used in conjunction with single acting wiper seals, as Style 931). The inclusion of radial grooves on the P.T.F.E. element, from 2mm diameter onwards allows rapid response to bidirectional pressure changes. laron omposite Seals Style 741 is specifically designed for minimum leakage and slow rotary applications Housing sizes and tolerances are identical to Style S6 Standard materials are Bronze filled P.T.F.E with a Nitrile ORing Energiser but both the outer sealing element and the energiser are available in a wide range of high performance materials to suit a variety of applications.the application parameters should be carefully considered prior to selecting suitable materials from the tables shown in ppendix 2. onsult laron for further advice. Temp. 54 to 2 (ependent upon ORing Material used see ppendix) Pressure upto 8 bar Velocity upto 15m/s These range parameters are maximum conditional values. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp. range Temp. range 3 to 8 8 to 12 4bar 35 bar iametrical learance F Shown in the graph to the right is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures upto 8. The use of a suitably selected laron bearing ring will effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability of the seal. The maximum seal extrusion gap should be calculated allowing for all tolerances and movement due to side load. For pressures > 4 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for Housing bore and f8 for Rod diameter. 181

155 S6 laronpolyseal Single & ouble cting Rod Seals S6 The full range of diameters applicable to the Standard, Light and Heavy uty Sections are shown in the table below Housing Rod dia. Section Width Standard Light (/1) Heavy (/2) to to to to to to to to to to to to to to 55 2 to Split grooves should be utilised for Rod iameters < 19mm For closed grooves 19 to 38mm use Light uty Section only When ordering, prefix the size reference with the style required and use the suffix shown in the material application tables. e.g. S6 Standard section in Bronze filled material for 7mm Rod S67/B S6 Light duty section in Glass filled material for 7 mm Rod S67/1G 741 Heavy duty section in arbon filled material for 7 mm Rod 7417/2 For ORing energiser materials other than Nitrile, use suffix shown in material table. e.g Flourocarbon material (FKM), S67/B/FKM For surface finish and lead in chamfers refer to the illustration below. For Housing dimensions and tolerances refer to the table of recommended sizes. For F/2 values see note and tables For E/2 values refer to P.T.F.E. Guide Tape For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix

156 laronpolyseal Nominal imensions & Machining Tolerances laron S63/B S64/B S65/B S66/B S663/B S68/1B S68/B S61/1B S61/B S612/1B S612/B S614/1B S614/B S615/B S616/B S618/B S62/1B S62/B S622/1B S622/B S625/1B S625/B S628/B S63/B S632/B S635/B S636/B S64/1B S64/B S642/1B S642/B S645/1B S645/B S648/1B S648/B S65/1B S65/B S652/1B S652/B S655/1B S655/B S656/1B S656/B d 1 f8 1 H9 L S SET R 1 MX F/2 MX Single & ouble cting Rod Seals S S6 183 Items in BOL are to suit ISO74252 Housings

157 laronpolyseal Nominal imensions & Machining Tolerances laron f S66/1B S66/B S663/1B S663/B S665/B S67/B S675/B S6762/B S68/B S685/B S69/B S695/B S61/B S615/B S611/B S6115/B S612/B S6125/B S613/B S6135/B S614/B S615/B S616/B S616/2B S617/B S618/B S618/2B S619/B S62/B S621/B S622/B S623/B S624/B S625/B S628/B S63/B S632/B S635/B S636/B S64/B S642/B S645/B S648/B S65/B H SET MX MX d 1 f8 1 H9 L S SET R 1 MX F/2 MX Single & ouble cting Rod Seals S S6 184 Items in BOL are to suit ISO74252 Housings

158 S 1 S 3 Imperial laronpolyseal ouble cting Rod Seals S1 S3 laron composite seals styles S1 and S 3 are designed for use in light duty hydraulic or pneumatic rod applications. Style S1 covers the range of imperial sizes, and the S3 metric sizes. For advice on installation, refer to ppendix. laron composite seals style S1 and S3 as standard comprise of a Virgin PTFE inner sleeve and are energised by a 75 shore hardness Nitrile rubber ORing. full range of materials are available to suit a variety of applications. See tables in ppendix. Maximum Working Pressure for Standard seal applications using specified tolerances. Temp Range: 4 to +12 (ependent upon energiser material. See ppendix) Max. Pressure: 35 Bar Max. Linear Speed: 15m/s These range parameters are maximum conditional values Optimum service conditions are affected by temperature, speed pressure, surface finish and extrusion gaps.. Refer to ppendix 1 for further information. iametral learance 'F' 'F' shown in the size tables is based upon Virgin P.T.F.E., temperatures up to 8 o and 35 Bar pressure in designs where PTFE guide tape is utilised. For other pressures, refer to the graph shown below. 'F' MX. (MM) PRESSURE (BR) ' F '.8" /.2M M ' F '.12" /.3M M ' F '.16" /.4M M To use this graph, refer to the tables on page for the max. value of 'F' at 35 Bar then apply the relevant curve for the various pressures. The maximum extrusion gap 'F/2' should be calculated allowing for all movements due to tolerances, sideloads and cylinder expansion. When ordering, quote the size reference shown on the dimensions table. If an energiser material other than the standard nitrile type is required, consult laron for the part number to be used. For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix. For F/2 values see note & tables For E/2 refer to Guide Tape 191

159 S 1 Imperial S 3 laronpolyseal ouble cting Rod Seals S 1 Imperial Sizes S 3 Sizes Nominal imensions & Machining Tolerances Nominal imensions & Machining Tolerances laron h9 ±.75 Ød 1 L 1 S Tol. On S Max R 1 Max 35 Bar F laron h9 ±.75 Tol. Max Max On 35 Bar S R 1 F Ød 1 L 1 S S 125 S 131 S 137 S 143 S 15 S 156 S 162 S 168 S 175 S 181 S 187 S 193 S 11 S 116 S 1112 S 1118 S 1125 S 1131 S 1137 S 1143 S 115/1 S 1156 S 1168 S 115 S 1162 S 1175 S 1187 S 12 S 1212 S 1225 S 1237 S 125 S 1262 S 1275 S 1287 S 13 S 1312 S 1325 S 1337 S 135 S 1362 S 1375 S 1387 S 14 S 1412 S 1425 S 1437 S 145 S 1462 S 1475 S 1487 S 15 S 1512 S 1525 S 1537 S 155 S 1562 S 1575 S 1587 S 16 S S 37 S 38 S 39 S 31 S 311 S 312 S 313 S 314 S 315 S 316 S 317 S 318 S 32 S 322 S 323 S 324 S 325 S 326 S 327 S 328 S 329 S 33 S 331 S 332 S 333 S 334 S 335 S 336 S 337 S 338 S 339 S 34 S 341 S 342 S 343 S 344 S 345 S 35 S 353 S 355 S 356 S 36 S 363 S 365 S 37 S 375 S 38 S 385 S 39 S 395 S 31 S 315 S 311 S 312 S 3125 S 313 S 3135 S 314 S 3145 S 315 S 3155 S

160 laronpolyseal Single cting Rod Seal HBT laron style HBT is a single acting seal for gland applications. esigned as a high pressure, low friction seal for use in second generation tandem sealing arrangements where the lower friction seal is used on the pressure side, and a 'low leak' but higher friction seal on the non pressure side to collect the oil film during the positive stroke. This type of arrangement is used where both low friction and low leakage are required. The seals high pressure resistance makes it suitable for use in heavy duty applications where shock loads and pressure spikes occur, as found in mobile plant equipment. Both the inner sealing element and the energiser are available in a wide range of materials to suit a variety of applications. The inner sealing element is manufactured from high performance Bronze filled PTFE, energised by an NBR ORing as standard. Maximum Working Pressure Bar (For Standard Materials) Temp. Range Temp. Range 3 to 8 8 to 12 4 Bar 35 Bar Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Maximum iametral learance F Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. F/2 should be calculated allowing for all movements due to sideload and cylinder expansion. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. For value of E/2, refer to the bearing ring requirements. Refer to ppendix 4 for value of tolerance symbols. Style HBT may be deformed and fitted into a closed groove. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. L 1 21

161 laron f8 Ød 1 laronpolyseal Single cting Rod Seal HBT Nominal imensions & Machining Tolerances H9 Ø L 1 Nominal HBT 15 HBT 2 HBT 25 HBT 3 HBT HBT 4 HBT 45 HBT 5 HBT 55 HBT HBT 63 HBT 65 HBT 7 HBT 75 HBT HBT 85 HBT 9 HBT 95 HBT 1 HBT HBT 11 HBT 115 HBT 12 HBT 125 HBT HBT 135 HBT 14 HBT 145 HBT 15 HBT HBT 16 HBT 165 HBT 17 HBT 175 HBT HBT 185 HBT 19 HBT 195 HBT 2 HBT HBT 21 HBT 215 HBT 22 HBT 225 HBT Items in BOL are to suit ISO74252 housings. 22

162 laronpolyseal Single cting Rod Seal HBTY laron style HBTY is a single acting seal for gland applications useing the same housing designs as Style HBI and Style HBT. esigned as a high pressure, low friction seal for use in second generation tandem sealing arrangements where the lower friction seal is used on the pressure side, and a 'low leak' but higher friction seal on the non pressure side to collect the oil film during the positive stroke. This type of arrangement is used where both low friction and low leakage are required. The seals high pressure resistance makes it suitable for use in heavy duty applications where shock loads and pressure spikes occur, as found in mobile plant equipment. Both the inner sealing element and the energiser are available in a wide range of materials to suit a variety of applications. The inner sealing element is manufactured from high performance Bronze filled PTFE, energised by an NBR Sqaure section Ring as standard. Maximum Working Pressure Bar (For Standard Materials) Temp. Range Temp. Range 3 to 8 8 to 12 4 Bar 35 Bar Maximum iametral learance F Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. Note: learance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of 3 to 8 The use of a suitably selected laron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal. F/2 should be calculated allowing for all movements due to sideload and cylinder expansion. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. For value of E/2, refer to the bearing ring requirements. Refer to ppendix 4 for value of tolerance symbols. Style HBT may be deformed and fitted into a closed groove. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. L 1 211

163 laron f8 Ød 1 laronpolyseal Single cting Rod Seal HBTY Nominal imensions & Machining Tolerances H9 Ø L 1 Nominal HBTY 55 HBTY 65 HBTY 7 HBTY 75 HBTY HBTY 85 HBTY 9 HBTY 95 HBTY 1 HBTY HBTY 115 HBTY 12 HBTY Items in BOL are to suit ISO74252 housings. 212

164

165 laronpolyseal Section Wiper Seals

166 laronpolyseal Single cting Rod Wiper Seal PWB Imperial laron Style PWB rod wiper is designed to remove potential system contaminants from a reciprocating rod during the negative stroke. It is classified as a light duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. The wiper is compact in design making it ideal for use where space is an important factor. Temp. Range 3 to 1 Max.Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed, and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PWB may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 11

167 laron laronpolyseal Single cting Rod Wiper Seal PWB Imperial Nominal imensions & Machining Tolerances Refer Seal Nominal Selection.5. ±.1 Ød 1 Ø 1 Ø 2 L 1 PWB PWB 1 PWB 1 PWB 2 PWB PWB 4 PWB 5 PWB 6 PWB 7 PWB PWB 9 PWB 11 PWB 12 PWB 13 PWB PWB 17 PWB 19 PWB 2 PWB 21 PWB PWB 25 PWB 26 PWB 27 PWB 28 PWB PWB 3 PWB 31 PWB 32 PWB 33 PWB PWB 35 PWB 36 PWB 37 PWB 38 PWB PWB 4 PWB 41 PWB 44 PWB 45 PWB PWB 48 PWB 5 PWB 51 PWB 52 PWB PWB 56 PWB 6 PWB

168 laronpolyseal Single cting Rod Wiper Seal PWO Imperial laron Style PWO Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke. It is classified as a light to medium duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. Temp. Range 3 to 1 Max.Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed, and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PWO may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 21

169 laron laronpolyseal Single cting Rod Wiper Seal Imperial PWO Nominal imensions & Machining Tolerances Refer Seal +.2 ±.5 Selection +.1 Ød 1 Ø 1 Ø L 1 Nominal L 2 PWO 59 PWO 6212 PWO PWO PWO PWO 114 PWO PWO PWO PWO PWO 152 PWO PWO PWO PWO PWO PWO PWO PWO 253 PWO PWO 335 PWO 3254 PWO PWO PWO PWO 4255 PWO PWO 5575 PWO

170 laronpolyseal Single cting Rod Wiper Seal PWS Imperial laron Style PWS Rod wiper is designed to remove potential system contaminants from a reciprocating rod during the negative stroke. It is classified as a medium to heavy duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. The addition of sealing beads on this wiper provide positive sealing in the housing preventing moisture/contaminants from passing the outside of the wiper. Temp. Range 3 to 1 Max.Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PWS may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 31

171 laron laronpolyseal Single cting Rod Wiper Seal PWS Refer Seal +.2 Selection. Ød 1 Ø 1 Nominal imensions & Machining Tolerances +.2. Ø L 1 Nominal L 2 PWS 7416 PWS PWS PWS PWS PWS PWS PWS 2227 PWS PWS PWS PWS PWS PWS PWS

172 laron laronpolyseal Single cting Rod Wiper Seal PWS Refer Seal +.8 Selection. Ød 1 Ø 1 Nominal imensions & Machining Tolerances +.8. Ø 2 Imperial +.8. L 1 Nominal L 2 PWS 115 PWS PWS PWS PWS PWS PWS PWS PWS 225 PWS PWS PWS 253 PWS PWS 335 PWS PWS PWS 354 PWS PWS 445 PWS PWS 455 PWS PWS PWS PWS PWS

173 laronpolyseal Single cting Rod Wiper Seal PWM Imperial laron Style PWM Rod wiper is designed to remove potential system contaminates from a reciprocating rod during the negative stroke. It is classified as a medium duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. Temp. Range 3 to 1 Max.Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1section for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PWM may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 41

174 laron Refer Seal Selection Ød 1 laronpolyseal Single cting Rod Wiper Seal PWM Nominal imensions & Machining Tolerances Ø 1 Ø L 1 Nominal L 2 PWM 794 PWM 712 PWM 7811 PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM

175 laron Refer Seal Selection Ød 1 laronpolyseal Single cting Rod Wiper Seal Imperial PWM Nominal imensions & Machining Tolerances Ø 1 Ø L 1 Nominal L 2 PWM 751 PWM 1137 PWM PWM PWM PWM 2237 PWM PWM PWM 3337 PWM PWM 445 PWM PWM

176 laronpolyseal Single cting Rod Wiper Seal WM laron Style WM Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke. It is classified as a medium duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. Temp.Range 3 to 1 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style WM may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 51

177 laron laronpolyseal Single cting Rod Wiper Seal WM Nominal imensions & Machining Tolerances Refer Seal Selection... Ød 1 Ø 1 Ø 2 L 1 Nominal L 2 WM 7811 WM WM WM WM WM WM WM WM WM WM WM

178 laronpolyseal ouble cting Rod Wiper Seal PWE Imperial laron Style PWE double acting Rod wiper is designed to remove potential system contaminants from a reciprocating rod during the negative stroke and to assist sealing by collecting the fluid film on the positive stroke. It is classified as a medium to heavy duty wiper and is precision moulded in Nitrile 9 o rubber. The wiper is machine trimmed to provide a precise wiping lip. The wipers ability to assist sealing make it ideal for use where zero leakage is required. laron Wiper Seals Style PWE should not be utilised in combination with doubleacting Rod seals unless the housing design allows for pressure relief between the wiper and the seal. Temp. range 3 to 1 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PWE may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 61

179 laronpolyseal laron ouble cting rod Wiper Seal Imperial PWE Refer Seal +.5 Selection. Ød 1 Ø 1 Nominal imensions & Machining Tolerances +.5. Ø L 1 Nominal L 2 PWE 1137 PWE PWE PWE PWE PWE PWE 2237 PWE PWE 335 PWE PWE 445 PWE

180 laronpolyseal Single cting Rod Wiper Seal Imperial SW SWM laron Style SW Rod wiper is designed to remove more tenacious mud and ice from a reciprocating rod during the negative stroke. It is classified as a heavy duty scraper. The scraper is precision moulded in Nylon (P) with a filter of MOS 2 to improve the friction and wear characteristics of the material. The materials high modulus (stiffness) allow it to aggressively scrape larger debris from the rod. the wiper is designed with an outside sealing lip providing positive sealing on the housing thus preventing dirt and moisture from entering the system around the outside of the wiper. Temp. range 4 to 1 Max Linear Speed m/sec 5 Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temp. in various fluids P Nylon IN Hydraulic Fluid escription H Mineral oil without additives 12 HL Mineral Fluid with anti corrosion and anti ageing additives 12 HLP Mineral oil as HL plus additives reducing wear, raising load 12 HLP Mineral oil as HLP but with detergents and dispersants 12 HV Mineral oil as HLP plus improved viscosity temp. 12 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based 8 HF S hlorinated hydrocarbon based 8 HF T Mixtures of HF R and HF S 8 HEPG Polyglycol based 1 HETG Vegetable Oil based 6 HEES Fully synthetic ester based 1 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Styles SW & SWM are designed to snap fit into its housing. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 71

181 laron SWM 16 SWM 18 SWM 2 SWM 22 SWM 25 laronpolyseal Single cting Rod Wiper Seal Nominal imensions & Machining Tolerances Refer Seal Nominal Selection... Ød 1 Ø 1 Ø 2 L SWM L SWM 28 SWM 3 SWM 32 SWM 36 SWM SWM 45 SWM 5 SWM 55 SWM 56 SWM SWM 63 WSM 65 SWM 7 SWM 8 SWM SWM

182 laron laronpolyseal Single cting Rod Wiper Seal SW Imperial Nominal imensions & Machining Tolerances Refer Seal Selection... Ød 1 Ø 1 Ø 2 L 1 Nominal L 2 SW 5 SW 62 SW 75 SW 87 SW SW 112 SW 125 SW 137 SW 15 SW SW 175 SW 2 SW 212 SW 225 SW SW 275 SW 3 SW 325 SW 35 SW

183 laronpolyseal Single cting Rod Wiper Seal PMW Imperial laron Style PMW metal cased Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke. It is classified as a medium to heavy duty rod wiper/scraper. The wiper is precision moulded in 98 o Shore Polyurethane with an accurately machined lip. The high modulus (stiffness) of this material allows the wiper to scrape tenatious mud and dirt from the rod. The wiper has a metal case designed to press fit in the housing thus retaining the wiper. The metal case is coated with a corrosion resistant yellow Zinc plating. The press fit design of this wiper allows it to be used in simple 'open ended' housing. Temp. range 4 to 11 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuos operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PMW is designed to press fit into an open ended housing. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 81

184 laron laronpolyseal Single cting Rod Wiper Seal Refer Seal Selection Ød 1 PMW Nominal imensions & Machining Tolerances H8 Ø 1 Imperial +.2 Nominal. L 1 L 2 PMW 1 PMW 125 PMW

185 laronpolyseal ouble cting Rod Wiper Seal PFB laron Style PFB double acting Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke and to assist sealing by collecting the fluid film on the positive stroke. It is classified as a medium to heavy duty rod wiper. The wiper is precision moulded in 8 Shore Nitrile Rubber with an accurately machined lip. The wiper has a metal case designed to press fit in the housing thus retaining the wiper. The press fit design of this wiper allows it to be used in a simple open ended housing. The sizes are to common Japanese housing standards. laron Wiper Seals Style PFB should not be utilised in combination with doubleacting Rod seals unless the housing design allows for pressure relief between the wiper and the seal. Temp. range 3 to 1 Max. Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1for further information. ontinuous operating temperature for various Fluids NBR Rubber IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based NS HF S hlorinated hydrocarbon based NS HF T Mixtures of HF R and HF S NS HEPG Polyglycol based NS HETG Vegetable Oil based 6 HEES Fully synthetic ester based NS For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PFB is designed to press fit into the open ended housings. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 91

186 laron laronpolyseal ouble cting Rod Wiper Seal PFB Nominal imensions & Machining Tolerances Refer Seal H Nominal Selection. + Ød 1 Ø 1 Ø 2 L 1 L 2 PFB 2233 PFB 2537 PFB 342 PFB 3547 PFB PFB 4557 PFB 562 PFB 5569 PFB 674 PFB PFB 784 PFB 7589 PFB 894 PFB 8599 PFB PFB 9519 PFB 1114 PFB PFB

187 laronpolyseal ouble cting Rod Wiper Seal PFP laron Style PFP double acting Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke and to assist sealing by collecting the fluid film on the positive stroke. It is classified as a heavy duty rod wiper. The wiper is precision moulded in 92 o Shore Polyurethane with an accurately machined lip. The wiper has a metal case designed to press fit in the housing thus retaining the wiper. The press fit design of this wiper allows it to be used in a simple open ended housing. The sizes are to common Japanese housing standards. laron Wiper Seals Style PFP should not be utilised in combination with doubleacting Rod seals unless the housing design allows for pressure relief between the wiper and the seal. Temp. range 4 to 11 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to appendix 4 for value of tolerance symbols. Style PFP is designed to press fit into the open ended housings. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. 11

188 laron laronpolyseal ouble cting Rod Wiper Seal PFP Nominal imensions & Machining Tolerances Refer Seal H Nominal Selection.. Ød 1 Ø 1 Ø 2 L 1 L 2 PFP 2233 PFP 2537 PFP 342 PFP 3547 PFP PFP 4557 PFP 562 PFP 5569 PFP 674 PFP PFP 784 PFP 7589 PFP 894 PFP 8599 PFP PFP 9519 PFP 1114 PFP PFP

189 laronpolyseal Single cting Rod Wiper Seal UPWM laron Style UPWM Rod wiper is designed to remove potential system contaminents from a reciprocating rod during the negative stroke. It is classified as a medium to heavy duty wiper and is precision moulded in 92 Shore Polyurethane. The wiper is machine trimmed to provide a precise wiping lip. Temp. range 4 to 11 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style UPWM may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

190 laron laronpolyseal Single cting Rod Wiper Seal UPWM Nominal imensions & Machining Tolerances Refer Seal H11 H Selection. Ød 1 Ø 1 Ø 2 L 1 Nominal L 2 UPWM 3 UPWM 4 UPWM 5 UPWM 6 UPWM

191 laronpolyseal ouble cting Rod Wiper Seal PW esigned to preclude the ingress of contaminents into the system as well as assist in sealing the Rod. Produced in Polyurethane, the wiper is designed to fit into closed housings with preloading of the static face providing stability and sealing. The wiper is profiled such that the lip facing the media collects fluid passing the rod seal. The use of Polyurethane with it's excellent properties combined with the proportioned design of the wiper will extend the service life of the rod seal.laron Wiper Seals Style PW should not be utilised in combination with doubleacting Rod seals unless the housing design allows for pressure relief between the wiper and the seal. Temp. Range 4 to 11 Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to appendix 4 for value of tolerance symbols. Style PW may be deformed and fitted into a closed groove. For the wiper to function correctly, it is important that care be taken in fitting the wiper within its housing. For a detailed checklist, refer to ppendix

192 laron laronpolyseal ouble cting Rod Wiper Seal PW Nominal imensions & Machining Tolerances Refer Seal H11 H Selection. Ød 1 Ø 1 Ø 2 L 1 Min. L 2 PW 25/1 PW 3 PW 3/2 PW 35/1 PW PW 42/1 PW 45/2 PW 48/1 PW 5 PW 55/ PW 6 PW 65 PW 7 PW 75 PW PW 85 PW 9 PW 95 PW

193 laronpolyseal Single cting Rod Wiper Seal EW Imperial laron Style EW Rod wiper is designed to remove potential system contaminants from a reciprocating rod during the negative stroke. It is classified as a medium to heavy duty wiper and is precision moulded in 98 Shore Polyurethane. The wiper is machine trimmed to provide a precise wiping lip. Temp. range 4 to 11 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style EW may be deformed and fitted into a closed groove housing as shown below. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix

194 laron laronpolyseal Single cting Rod Wiper Seal EW Nominal imensions & Machining Tolerances Imperial Refer Seal Nominal Selection... Ød 1 Ø 1 Ø 2 L 1 L 2 EW 275 EW 3 EW 35 EW 362 EW EW 525 EW 631 EW 731 EW

195 laronpolyseal Single & ouble cting Rod Wiper Seals laron Wiper Seals Style 941 are designed as low friction oubleacting seals to assist the sealing capability of singleacting Rod seal arrangements in arduous conditions. laron Wiper Seals Style 941 should not be utilised in combination with doubleacting Rod seals unless the housing design allows for pressure relief between the wiper and the seal. laron Wiper Seals Style 931 are designed as low friction Singleacting Rod wiper seals for use with single or doubleacting Rod seals in hydraulic and pneumatic cylinders. This style does not offer any assistance to the sealing capability of the Rod seal and therefore would not be recommended for use where Style 941 could be utilised. Housing sizes and tolerances are identical to Style 941 Standard materials are Virgin Modified P.T.F.E with a Nitrile ORing Energiser but both the inner wiper element and the energiser are available in a wide range of high performance materials to suit a variety of applications. The application parameters should be carefully considered prior to selecting suitable materials from the tables shown in ppendix. onsult laron for further advise. Temp. 5 to 2, (ependent upon ORing Material used see ppendix 2.) Velocity upto 15m/s linear, 5m/s Rotary or Oscillating These range parameters are maximum conditional values. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 section for further information. The full range of diameters applicable to the Standard, Light and Heavy uty Sections are shown in the table below. Housing Rod ia. Section Width Standard uty Light uty Heavy uty to to to to to to to to to to to to to 42. For Standard and Light uty Sections split grooves should be utilised for Rod iameters < 3mm For Heavy uty Sections use split grooves for Rod iameters <4mm 141

196 laronpolyseal Single & ouble cting Rod Wiper Seals When ordering, prefix the size reference with the style required and use the suffix shown in the material application tables. e.g. 931 Standard section in Virgin Modified material for 7mm Rod 9317/VM 941 Light duty section in Bronze filled material for 7 mm Rod 9417/1B 941 Heavy duty section in arbon filled material for 7 mm Rod 9417/2 For ORing energiser materials other than Nitrile, use suffix shown in material table e.g Flourocarbon material (FKM), 9417/VM/FKM For surface finish and lead in chamfers refer to the illustration below. For Housing dimensions and tolerances refer to the table of recommended sizes. For F/2 values see note and tables For E/2 values refer to P.T.F.E. Guide Tape For the seal to function correctly it is important that care is taken during fitting. For details refer to ppendix

197 Nominal imensions & Machining Tolerances laron laronpolyseal 9416/VM 94163/VM 9418/VM 9411/VM 94112/VM 94114/VM 94115/VM 94116/VM 94118/VM 9412/VM 94122/VM 94125/VM 94128/VM 9413/VM 94132/VM 94135/VM 94136/VM 9414/VM 94142/VM 94145/VM 94148/VM 9415/VM 94152/VM 94155/VM 94156/VM 9416/VM 94163/VM 94165/VM 9417/VM 94175/VM /VM 9418/VM 94185/VM 9419/VM 94195/VM f8 d 1 H L 1 Min L 2 SET S MX R Single & ouble cting Rod Wiper Seals imensions in bold type conform to ISO 332 :1987

198 931 laronpolyseal Single & ouble cting Rod Wiper Seals laron f8 d 1 H9 1 Nominal imensions & Machining Tolerances L 1 Min L 2 SET S MX R /VM 94115/VM 94111/VM /VM 94112/VM /VM 94113/VM /VM 94114/VM 94115/VM /VM 94117/VM 94118/VM 94119/VM 9412/VM /VM 94122/VM 94123/VM 94124/VM 94125/VM /VM 9413/VM 94132/VM 94135/VM 94136/VM /VM 94142/VM 94145/VM 94148/VM 9415/VM imensions in bold type conform to ISO 332 :1987 ll intermediate sizes upto 58mm are available, incl. Imperial 144

199 laronpolyseal Rod Wiper Seal PW esigned to prevent the ingress of contaminents into the system thus extending the service life of the cylinder in applications where there is a risk of large accumulations of dirt on the Rod such as earth moving equipment. The Wiper is designed with positive seating of the outside face and beads on the inside diameter. These features provide sealing on the static face as well as stability in the housing. The Wiper is produced in 98 Shore Polyurethane which offers a high level of stiffness providing the Wiper with the ability to remove dried on mud from the Rod. The material also has excellent wear properties for a long service life even under arduous conditions. The Wiper is designed to fit into closed housings. Temp. Range 4 to 11 Max Linear Speed m/sec 3. Optimum service conditions are affected by temperature, speed and surface finish. Refer to ppendix 1 for further information. ontinuos operating temperature for various fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. Style PW Wiper maybe deformed and fitted into a closed groove housing. For the wiper to function correctly, it is important that care be taken in fitting the wiper within its housing. For a detailed checklist, refer to ppendix

200 laron laronpolyseal Rod Wiper Seal PW Nominal imensions & Machining Tolerances Refer Seal H11 H Selection. Ød 1 Ø 1 Ø 2 L 1 Min. L 2 Nominal. Nominal. R 1 R 2 PW 45 PW

201 laronpolyseal Section E Polymeric Plain Bearings E

202 laronpolyseal laron produce four main types of polymer bearings for use in hydraulic cylinder applications. Each has a varying set of properties to cover a wide range of applications. The following tables are designed to help select the correct type for a given application. Table 1 shows the properties for each type of bearing. Values shown as low/high should be interpreted as relative to each other. BGF BT EBR PBR Material Modified & Filled P Bronze Filled PTFE POM Reinforced Phenolic Max Operating Temp Max Linear Velocity m/s oefficient of friction Load apacity High Low Normal High Sevice Life High High Normal Normal Relative ost factor Production of contamination Normal V.Low Normal High Modification of metal finish High V.Low Normal High hemical resistance Normal V.High Normal Normal Table 2 shows a summary of recommended uses. Type Recomm ended Uses BGF pplications requiring high bearing capacity and long service life. BT/T ll applications utilising PTFE based seals. pplications requiring smooth low friction operation. pplications with poor lubrication, or high speeds. Type T should be used for pneumatic applications or for nonferrous metals. EBR Standard applications requiring a low cost but efficient bearing. PBR pplications requiring high bearing capacity at high temperatures, or where the 'dieseling effect' (ignition of vapour) may take place. To calculate the maximum allowable bearing load in Newtons for a laron bearing ring used in standard hydraulic cylinder applications, multiply the projected area by the load capacity as follows: 1) To calculate the projected area multipy the I of the bearing by its width: Projected area= I(mm) x W(mm) 2) Multiply the projected area by the load capacity taken from figure 2 for the required maximum operating temperature. Bearing Load = Projected rea x Load capacity E1

203 laronpolyseal alculation of maximum allowable bearing Load Figure 1 Note: Figure 1 shows that the load distribution is not even along the projected area, this however has already been taken into account in the calculation of load capacity in figure 2. Lubricated applications. Load apacity as a function of Temperature BT PBR EBR BGF 1 5 Load apacity. N/mm² (log scale) Figure 2 Temperature For unlubricated applications laron recommends the use of arbon bearing tape T. See section E2 E2

204 laronpolyseal Piston & Rod Bearing Rings EBR & IBR Imperial laron EBR & IBR bearing rings are designed for use on Pistons or Rods to align Rod and Piston and to prevent metal to metal contact. This bearing is precision moulded from a high performance grade of Polyacetal. These bearing rings are Butt split to facilitate assembly, and to allow the passage of fluid. See the 'selection of bearing rings' at the beginning of this section for further application details. Max. Operating Temp 11 Max. Linear Velocity 1 m/sec See graph at the beginning of this section for load capacity values ontinuos operating temperature for various fluids POM Polyacetal IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based 8 HF S hlorinated hydrocarbon based 8 HF T Mixtures of HF R and HF S 8 HEPG Polyglycol based 1 HETG Vegetable Oil based 6 HEES Fully synthetic ester based 1 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. R 1 =.2mm MX For the bearing to function correctly, it is important that care be taken in fitting the bearing within its housing. For a detailed checklist, refer to ppendix 3. E11

205 laron EBR 25 EBR 32 EBR 4 EBR 46 EBR laronpolyseal Piston Bearing Rings EBR Nominal imensions & Machining Tolerances 1mm +..5 >1mm +..8 Ø 1 Ød L H9 ±.2 ± ØG EBR 5/1 EBR 55 EBR 6 EBR 63 EBR EBR 7 EBR 75 EBR 8 EBR 9 EBR EBR 11 EBR 115 EBR 12 EBR 12/1 EBR EBR 125/1 EBR 127 EBR 13 EBR 14 EBR EBR 15/1 EBR 16 EBR 17 EBR 18 EBR EBR 22 EBR E12

206 laron laronpolyseal Piston Bearing Rings EBR Imperial Nominal imensions & Machining Tolerances H9 ±.4 ±.1 " +.".2" >" +.".3" Ød 1 Ø 1 L 1 ØG EBR 1 EBR 125 EBR 15 EBR 175 EBR EBR 21/1 EBR 225 EBR 25 EBR 2625 EBR EBR 3 EBR 325 EBR 35 EBR 375 EBR EBR 45 EBR 45/1 EBR 5 EBR 55 EBR EBR 65 EBR 7 EBR 725 EBR 75 EBR EBR 825/1 EBR 85 EBR 9 EBR E13

207 laron laronpolyseal Rod Bearing Rings IBR Nominal imensions & Machining Tolerances f8 ±.2 ± 115mm +.5. >115mm +.8. Ød 2 Ø 2 L 1 ØG IBR 2 IBR 22 IBR 25 IBR 28 IBR IBR 36 IBR 4 IBR 45 IBR 45 IBR IBR 56 IBR 6 IBR 63 IBR 7 IBR IBR 8 IBR 9 IBR 95 IBR 1 IBR 1/ IBR 11 IBR 12 IBR 125 IBR 125/1 IBR IBR 14 IBR E14

208 laron laronpolyseal Rod Bearing Rings IBR Imperial Nominal imensions & Machining Tolerances f8 4.5" +.2"." >4.5" +.2"." ±.4 ±.1 Ød 2 Ø 2 L 1 ØG IBR 1 IBR 1125 IBR 125 IBR 1375 IBR IBR 175 IBR 175/1 IBR 2 IBR 225 IBR IBR 25 IBR 2625 IBR 275 IBR 3 IBR IBR 3375 IBR 35 IBR 3625 IBR 375 IBR IBR 425 IBR 4375 IBR 45 IBR 475 IBR IBR E15

209 laronpolyseal Bearing Tape BT/T This range of products is designed for use in hydraulic and pneumatic piston and gland applications to minimise the problems of metal to metal contact by inexpensive means. Produced from wear resistant filled grades of PTFE with its known properties of low friction, these products eliminate 'stiction' between moving parts, reduce 'nibbling' of the seal at high pressures due to radial movement and are easily assembled. For hydraulic applications we recommend LRON P.T.F.E. bearing tape with a Bronze filling. Style BT... For pneumatic applications we recommend LRON P.T.F.E. bearing tape with a arbon filling. Style T... Other materials are available ant the table in ppendix 2 should be carefully considered. onsult LRON for further advice on alternative materials. Temp. 6 to 2 Velocity 15m/sec These range parameters are maximum conditional values. Refer to "Bearing Selection" page E1 and "Bearing Materials" in ppendix 1. Example: Hydraulic application, section 2mm, width 9.7mm, Bore 1mm, Reciprocating application.(r cut): BT 297/34/R Material BT or T Section & Width S & W Length L Type of cut R or O TYPE OF UT Reciprocating pplication Suffix R Rotary or Oscillating pplication Suffix O TPE LENGTH 'L' (For Temperatures upto 12 ) Piston pplication (mm) L=π(.99Ø 1 S)1 Rod pplication (mm) L=π(.99Ød 2 +S)1 For rolls of tape, quote length required and material / size code. e.g. 15m BT 2597 TPE WITH 'W' In new designs, the choice of tape width 'W' is determined by formula based upon load, diameter and material capability under the given operating conditions. Note: Refer also to "Bearing Selection" page E1. For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. R 1 =.2mm MX For F/2 values refer to seal selection. E/2=.3mm to.5mm E21

210 laronpolyseal laron P.T.F.E. Bearing Tape is specifically designed for use with P.T.F.E. omposite Seals. The nature of P.T.F.E. allows for a manufactured size giving a tighter fit than harder materials such as PhosphorBronze, Meehanite or Polyester Fabric. This reduction in radial clearance gives a marginal improvement to the pressure capability of the seal but, more importantly, protects the seal from contaminant particles within the system. combination of the design of the bearing and the characteristics of P.T.F.E. allow the particles to become embedded in the P.T.F.E. on the nonworking face, thus also protecting the steel counterface from scoring. uring use, bearing materials wear, causing debris and contamination of the fluid.extensive tests have shown that particulate contamination >15µm within the fluid, increases with the use of PhosphorBronze or Meehanite, and tends to Figure 1 decrease with the use of P.T.F.E. The harder debris created by these bearings also has a greater effect upon seal performance.particulate contamination in the fluid surrounding the seal can be over 1 times that in the main system due to the bearing preventing flushing of the seal space. Increased contamination in this area will increase the probability of a large enough particle gaining access to the seal interface, causing damage and leakage.laron P.T.F.E. Bearing Tape is designed to allow pressure relief to the seal by use of the expansion gap (k). This avoids the possibility of a pressure lock between the seal and the bearing, as well as eliminating the possibility of Hydrodynamic pressure buildup (shown in Figure 1) causing premature destruction of the seal. This relief also avoids the presence of excess pressure during the return stroke which can prevent the transfer of the fluid film back to the pressure side of the seal, so creating the effect of a leaking seal. Pressure relief should be incorporated within the design of continuous bearings, particularly for fast cycling applications.the advantages of laron P.T.F.E. Bearing Tape are not restricted to omposite Seals but apply to Nitrile and Polyurethane Seals. onsideration of Radial Load The maximum radial load applied to the bearings will determine both the width W of the tape and number of bearings to be used. This can be calculated based on the radial force and the maximum permissible load capacity of the material at a given temperature. In the case of either lubricated dynamic, or unlubricated static applications BRONZE filled P.T.F.E. tape should be used and the value of 'P' should be taken from graph 1 shown below. In the case of unlubricated ynamic applications, friction has a much greater effect on the material which reduces the permissible load capacity of the material as the velocity increases. Therefore to allow for the effect of velocity, the load capacity P taken from graph 1 for RBON filled P.T.F.E. should be reduced by multiplying it by a factor f taken from graph 2. Where: Lubricated ynamic Unlubricated ynamic W=Minimum Tape Width (mm) onditions n=number of Bearings onditions F=Maximum Radial Force (Kp) d=inside diameter of tape(mm) F max F max W= P=Permissible load capacity N/mm 2 ) Pxnxd W= f=reduction Factor Pxfxnxd 6 Graph 1. Graph 2. 1 Permissible Load 'P' (N/mm 2 ) Temp Factor f Velocity M/min. E22

211 laronpolyseal laron Prefix BT T S Bearing Tape BT/T Nominal imensions & Machining Tolerances W Min Ø Ød1 Min Ø Ø2 1mm +..5 >1mm +..8 Ød 1 115mm +.5. >115mm +.8. Ø L d d d d d d d d d d d d d d d d d d 2 + d 2 + d d 2 + d 2 + d 2 + d 2 + d d 2 + d d d d d d d d d d d d d d d d d d d E23

212 laronpolyseal Piston & Rod Bearing Rings BGF laron BGF bearing rings are designed for use on pistons or rods to align rod and piston and to prevent metal to metal contact. This bearing is precision moulded from a reinforced and heat stabilised grade of Nylon. The reinforcing fibres allows a higher than normal load capability and life span for this type of material. ll laron bearing rings are split to facilitate assembly, and to allow the passing of fluid. See the 'selection of bearing rings' at the beginning of this section for further application details. Max. Operating Temp 11 Max. Linear Velocity 1.5 m/sec See graph at the beginning of this section for load capacity values Order using the part number shown followed by a suffix denoting the type of cut required: Type Suffix Straight cut /O ngle cut /R6 (where the number represents the angle required) ontinuos operating temperature for various fluids P Nylon IN Hydraulic Fluid escription H Mineral oil without additives 12 HL Mineral Fluid with anti corrosion and anti ageing additives 12 HLP Mineral oil as HL plus additives reducing wear, raising load 12 HLP Mineral oil as HLP but with detergents and dispersants 12 HV Mineral oil as HLP plus improved viscosity temp. 12 HF E Emulsions of mineral oil in water. Water content 895% 55 HF S Synthetic oil in water. Water content 895% 55 HFB Emulsions of water in mineral oil. Water content 4% 6 HF queous polymer solutions. Water content 35% 6 HF R Phosphoric acid ester based 8 HF S hlorinated hydrocarbon based 8 HF T Mixtures of HF R and HF S 8 HEPG Polyglycol based 1 HETG Vegetable Oil based 6 HEES Fully synthetic ester based 1 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the bearing to function correctly, it is important that care be taken in fitting the bearing within its housing. For a detailed checklist, refer to ppendix 3. E/2 =.5 to 1.mm R 1 =.2mm MX E31

213 laron H9 laronpolyseal Piston & Rod Bearing Rings Nominal imensions & Machining Tolerances 1mm mm +..5 >1mm +..8 >1mm +..8 Ø 1 Ø 2 BGF f8 Ød 1 Ød L 1 E BGF / BGF 5449/ BGF 65618/ BGF 65611/ BGF 68641/ BGF 76525/ BGF 75711/ BGF 8761/ BGF 85811/ BGF 19515/ to 2. BGF / BGF / BGF / E32

214 laronpolyseal Piston & Rod Bearing Rings PBR laron PBR bearing rings are designed for use on pistons or rods to align rod and piston and to prevent metal to metal contact. This bearing is precision machined from a reinforced grade of Phenolic resin. The thermoset properties of this material allows a high load capability even at higher temperatures. ll laron bearing rings are split to facilitate assembly, and to allow the passage of fluid. See the 'selection of bearing rings' at the beginning of this section for further application details. Max. Operating Temp. (Intermittent) 15 Max. Operating Temp. (ontinuous) 12 Max. Linear Velocity 3m/sec See graph at the beginning of this section for load capacity values Order using the part number shown followed by a suffix denoting the type of cut required: Type Suffix Straight cut /O ngle cut /R6 (where the number represents the angle required) For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to ppendix 4 for value of tolerance symbols. For the bearing to function correctly, it is important that care be taken in fitting the bearing within its housing. For a detailed checklist, refer to ppendix 3. R 1 =.2mm MX E/2 =.5 to 1.mm For F/2 values refer to seal selection. E41

215 laronpolyseal Piston & Rod Bearing Rings PBR laron H9 Ø 1 Nominal imensions & Machining Tolerances 1mm >1mm +..8 f8 Nom. Sec.. Ø 2 Ød 1 Ød 2 L 1 S 1mm +..5 >1mm +..8 E PBR PBR 2174 PBR 2168 PBR PBR PBR PBR PBR PBR 3274 PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR to 2. PBR 4361 PBR PBR PBR PBR PBR PBR PBR PBR 5474 PBR PBR PBR 5458 PBR PBR PBR PBR PBR 5558 PBR PBR PBR PBR 6558 PBR PBR PBR PBR Other sizes available on request E42 ISO 1766:1966 sizes are shown in bold

216 laron H9 Ø 1 laronpolyseal Piston & Rod Bearing Rings 1mm mm +..5 >1mm +..8 >1mm +..8 PBR Nominal imensions & Machining Tolerances f8 Ø 2 Ød 1 Ød L 1 Nom. Sec. S E PBR PBR PBR PBR PBR PBR PBR 6562 PBR PBR PBR PBR 7651 PBR PBR 7652 PBR PBR PBR PBR PBR 7571 PBR PBR to 2. PBR PBR 8751 PBR 8751 PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR Other sizes available on request E43 ISO 1766:1966 sizes are shown in bold

217 laron H9 Ø 1 laronpolyseal Piston & Rod Bearing Rings PBR 1mm mm +..5 >1mm +..8 >1mm +..8 Nominal imensions & Machining Tolerances f8 Ø 2 Ød 1 Ød L 1 Nom. sec. S E PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR to 2. PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR Other sizes available on request E44 ISO 1766:1966 sizes are shown in bold

218 laronpolyseal Piston & Rod Bearing Rings PBR laron H9 Ø 1 1mm mm +..5 >1mm +..8 >1mm +..8 Nominal imensions & Machining Tolerances f8 Ø 2 Ød 1 Ød L 1 Nom. Sec. S E PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR to 2. PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR PBR Other sizes available on request E45 ISO 1766:1966 sizes are shown in bold

219 laron PBR PBR PBR PBR PBR H9 Ø laronpolyseal Piston & Rod Bearing Rings 1mm mm +..5 >1mm +..8 >1mm +..8 Nominal imensions & Machining Tolerances PBR f8 Ø 2 Ød 1 Ød L Nom. Sec. S E PBR PBR PBR PBR PBR to 2. PBR PBR PBR PBR PBR PBR PBR PBR Other sizes available on request E46 ISO 1766:1966 sizes are shown in bold

220

221 laronpolyseal Section F BackUp Rings F

222 laronpolyseal PTFE BackUp Rings This range of products is designed to overcome the problems of 'O'Ring extrusion when the system pressures are greater than the sealing capabilities of an unsupported 'O'Ring. The use of P.T.F.E. for antiextrusion rings has many advantages over 'hard rubber' materials, particularly at high system pressures. The cold flow characteristics of PTFE are used to full advantage in reducing the extrusion gaps to a minimum and allowing automatic compensation for wear. The capability of specialist compounding to suit extremes of duty combined with a high resistance to virtually all chemicals, low friction and wear rates render PTFE as the ideal material for antiextrusion devices. Variations Spiral The spiral back up ring is the most common style in use being effectively self adjusting to diametral tolerances. Spiral back up rings are manufactured from virgin PTFE only. Order as part number shown on table.e.g. BS 21 Endless The endless back up ring is used where problems can occur with the rotation of a screwed endcaps which on assembly could cause a spiral type to unwind. Endless back up rings are normally manufactured from virgin PTFE. Order as part number shown on the table with suffix E, e.g. BS 21/E Endless Split The endless split back up ring is manufactured as the endless style but is split at 3 o to facilitate ease of assembly in certain applications. Endless split back up rings are normally manufactured from virgin PTFE. Order as part number shown on the table with the suffix ES, e.g. BS 21/ES Order using the part number shown followed by a suffix denoting the style required. See above examples. F41

223 laronpolyseal For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to appendix 4 for value of tolerance symbols. HOUSING IMENSIONS (refer to following tables 1& 2) Gland housing arrangement Max groove dia.= Shaft dia.d 1 min.+2s max Min groove dia.= Shaft dia.d 1 min.+2s min. Piston housing arrangement Max. groove dia.= ylinder dia. 1 min.2s min. Min. groove dia.=ylinder dia. 1 max.2s max. POSITIONING OF BKUP RINGS Uniirectional Pressure Biirectional Pressure For the back up ring to function correctly, it is important that care be taken in fitting the backup within its housing. For a detailed checklist, refer to ppendix 3. F42

224 laronpolyseal [LPXPÃ3UHVVXUHÃ9VÃ'LPHWUOÃ&OHUQFHÃ)ÃIRUÃ25LQJVÃÉÃ25LQJVÃZLWKÃYLUJLQÃ37)(Ã%FNÃXSÃULQJV If concentricity of mating diameters is assured, F may be doubled for any given pressure. ÅÃÃÃPPÃ7KNÃ%8S ÅÃÃÃPPÃ7KNÃ%8S ÅÃÃPPÃ7KNÃ%8S ƒã6kruhã1%5ã25lqj [LPXP3UHVVXUH%U ƒã6kruhã1%5ã25lqj ƒã6kruhã1%5ã25lqj ƒã6kruhã1%5ã25lqj 'LPHWUO&OHUQFH)PP Where ORings are used in dynamic applications, an antiextrusion ring is recommended for pressures >1bar and temperatures >1. F43

225 laronpolyseal Housing groove dimensions for 'O'Rings to BS186 and BS4518 fitted with backup rings in ynamic and Static diametral applications. Tables 1 & 2 refer to the housing drawings. IMPERIL Housing groove dimensions for ORings to BS186 fitted with backup rings in ynamic & Static diametrical applications. ORing Section Groove Width L 1 Radial Width 'S' One backup ring Two backup rings Max. Min. Max. Min. Max. Min. Radius 'R1' Max. ham. '' Min..7".62".6".152".147".21".25".3".85".13".94".91".199".194".257".252".3".97".139" ".122".247".241".35".299".3".13".21".188".184".355".348".427".42".3" ".275" ".245".48".473".582".576".3" " Table 1 METRI Housing groove dimensions for ORings to BS4518 fitted with backup rings in ynamic & Static diametrical applications. ORing Section Groove Width L 1 Radial Width 'S' One backup ring Two backup rings Max. Min. Max. Min. Max. Min. Radius 'R1' Max. hamf. '' Min. 1.6 mm 1.3 mm 1.25 mm 4. mm 3.8 mm 5.4 mm 5.2 mm.5 mm 2.2 mm 2.4 mm 2.9 mm 1.97 mm 4.8 mm 4.6 mm 6.2 mm 6. mm.5 mm 2.2 mm 3. mm 2.65 mm mm 5.6 mm 5.4 mm 7. mm 6.8 mm 1. mm 2.6 mm 5.7 mm 5.18 mm 4.95 mm 9.5 mm 9.3 mm 11.3 mm 11.1 mm 1. mm 3.7 mm Table 2 F44

226 Spiral Solid. E Solid Split. ES laronpolyseal PTFE BackUp Rings To Suit ORings to BS 186 Imperial laron Nominal imensions Ød 1 Ø 1 T Max. ORing Section laron Nominal imensions Ød 1 Ø 1 T Max. ORing Section BS 5 BS 6 BS 7 BS 8 BS BS 113 BS 114 BS 115 BS 116 BS BS 1 BS 11 BS 12 BS 13 BS BS 118 BS 119 BS 12 BS 121 BS BS 15 BS 16 BS 17 BS 18 BS BS 123 BS 124 BS 125 BS 126 BS BS 2 BS 21 BS 22 BS 23 BS BS 128 BS 129 BS 13 BS 131 BS BS 25 BS 26 BS 27 BS 28 BS BS 133 BS 134 BS 135 BS 136 BS BS 3 BS 31 BS 32 BS 33 BS BS 138 BS 139 BS 14 BS 141 BS BS 35 BS 36 BS 37 BS 38 BS BS 143 BS 144 BS 145 BS 146 BS BS 4 BS 41 BS 42 BS 43 BS BS 148 BS 149 BS 15 BS 151 BS BS 45 BS 46 BS 47 BS 48 BS BS 153 BS 154 BS 155 BS 156 BS BS 5 BS 18 BS 19 BS 11 BS 111 BS BS 158 BS 159 BS 16 BS 161 BS F45

227 Spiral Solid. E Solid Split. ES laronpolyseal PTFE BackUp Rings To Suit ORings to BS 186 Imperial laron Nominal imensions Ød 1 Ø 1 T Max. ORing Section laron Nominal imensions Ød 1 Ø 1 T Max. ORing Section BS 26 BS 27 BS 28 BS 29 BS BS 256 BS 257 BS 258 BS 259 BS BS 211 BS 212 BS 213 BS 214 BS BS 261 BS 262 BS 263 BS 264 BS BS 216 BS 217 BS 218 BS 219 BS 22 BS 221 BS 222 BS 223 BS 224 BS BS 266 BS 267 BS 268 BS 269 BS 27 BS 271 BS 272 BS 273 BS 274 BS BS 226 BS 227 BS 228 BS 229 BS BS 276 BS 277 BS 278 BS 279 BS BS 231 BS 232 BS 233 BS 234 BS BS 281 BS 282 BS 283 BS BS 236 BS 237 BS 238 BS 239 BS BS 314 BS 315 BS 316 BS 317 BS BS 241 BS 242 BS 243 BS 244 BS BS 319 BS 32 BS 321 BS 322 BS BS 246 BS 247 BS 248 BS 249 BS BS 324 BS 325 BS 326 BS 327 BS BS 251 BS 252 BS 253 BS 254 BS BS 329 BS 33 BS 331 BS 332 BS BS 334 BS 335 BS F46

228 Spiral Solid. E Solid Split. ES laronpolyseal PTFE BackUp Rings To Suit ORings to BS 186 Imperial laron BS 337 BS 338 BS 339 BS 34 BS 341 Nominal imensions Ød 1 Ø 1 T Max. ORing Section laron BS 425 BS 426 BS 427 BS 428 BS 429 Nominal imensions Ød 1 Ø 1 T Max. ORing Section BS 342 BS 343 BS 344 BS 345 BS BS 43 BS 431 BS 432 BS 433 BS BS 347 BS 348 BS 349 BS 35 BS BS 435 BS 436 BS 437 BS 438 BS BS 352 BS 353 BS 354 BS 355 BS BS 44 BS 441 BS 442 BS 443 BS BS 357 BS 358 BS 359 BS 36 BS BS 445 BS 445 BS 446 BS 446 BS BS 362 BS 363 BS 364 BS 365 BS BS 447 BS 448 BS 448 BS 449 BS BS 367 BS 368 BS 369 BS 37 BS BS 45 BS 45 BS 451 BS 451 BS BS 372 BS 373 BS 374 BS 375 BS BS 452 BS 453 BS 454 BS 455 BS BS 377 BS 378 BS 379 BS 38 BS BS 457 BS 458 BS 459 BS 46 BS BS 382 BS 383 BS 384 BS 385 BS BS 462 BS 463 BS 464 BS 465 BS BS 387 BS 388 BS 389 BS 39 BS BS 467 BS 468 BS 469 BS 47 BS BS 392 BS 393 BS 394 BS BS 472 BS 473 BS 474 BS F47

229 Spiral Solid. E Solid Split. ES laronpolyseal PTFE BackUp Rings To Suit ORings to BS 4518 laron BS 3116 BS 4116 BS 5116 BS 6116 BS 7116 BS 8116 BS 9116 BS 1116 BS BS BS BS BS BS BS Nominal imensions Ød 1 Ø 1 T Max. ORing Section laron BS 1953 BS 2153 BS 2253 BS 2453 BS 2553 BS 2653 BS 2753 BS 2953 BS 3153 BS 3253 BS 3453 BS 3553 Nominal imensions Ød 1 Ø 1 T Max. ORing Section BS BS BS BS BS BS BS BS BS BS 3624 BS 4624 BS 5624 BS 6624 BS 7624 BS 8624 BS 9624 BS 1624 BS BS BS BS BS BS BS BS BS BS 2624 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS 3653 BS 3753 BS 3953 BS 4153 BS 4253 BS 4453 BS 4953 BS 5453 BS 5553 BS 5753 BS 5953 BS 6353 BS 6453 BS 6953 BS 7453 BS 7953 BS 8453 BS 8953 BS 9453 BS 9953 BS 1453 BS 1953 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS 2453 BS 2953 BS BS BS BS F48

230 Spiral Solid. E Solid Split. ES laronpolyseal PTFE BackUp Rings To Suit ORings to BS 4518 laron BS BS BS BS BS Nominal imensions Ød 1 Ø 1 T Max. ORing Section laron BS BS BS BS BS Nominal imensions Ød 1 Ø 1 T Max. ORing Section BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS F49

231 laronpolyseal Static Flange Seal FS Imperial laron style FS flange seal is designed to suit the SE J518 range of flanges, and common metric flange sizes. The seal is manufactured in laron's high performance grade of Polyurethane with excellent resistance to extrusion and compression set over a wide temperature range. The design offers many performance advantages over common oring, or rubber based flange seals, including the elimination of the 'pumping effect'. Max. Pressure 4 Bar Temp Range 4 to 11 These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, pressure, surface finish and extrusion gaps. Refer to ppendix 1 for further information. ontinuous operating temperature for various Fluids U Polyurethane IN Hydraulic Fluid escription H Mineral oil without additives 1 HL Mineral Fluid with anti corrosion and anti ageing additives 1 HLP Mineral oil as HL plus additives reducing wear, raising load 1 HLP Mineral oil as HLP but with detergents and dispersants 1 HV Mineral oil as HLP plus improved viscosity temp. 1 HF E Emulsions of mineral oil in water. Water content 895% 4 HF S Synthetic oil in water. Water content 895% 4 HFB Emulsions of water in mineral oil. Water content 4% 4 HF queous polymer solutions. Water content 35% ns HF R Phosphoric acid ester based ns HF S hlorinated hydrocarbon based ns HF T Mixtures of HF R and HF S ns HEPG Polyglycol based ns HETG Vegetable Oil based 6 HEES Fully synthetic ester based 6 For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to ppendix 3. F51

232 laronpolyseal Static Flange Seal FS laron Nominal Flange Size Ø 1 Nominal imensions & Machining Tolerances Nominal Ød L L S Max. R 1 FSM FSM F52

233 laronpolyseal Static Flange Seal FS Imperial SE J518 laron Nominal Flange Size Nominal imensions & Machining Tolerances Ø 1 Nominal Ød L L S Max. R 1 FS 5 FS 75 FS 1 FS 125 FS FS F53

234 laronpolyseal Other laron Group Products

235 laronpolyseal laron (Plastics) Ltd. laron (Plastics) Ltd. is the U.K. s largest manufacturer of stock shapes based on P.T.F.E. compounds specifically developed for sealing systems. The quality of this range has also gained the approval and wide spread use of many other industries, including chemical and process plant. Typical machined products include bellows, balls, lantern rings, valve seats, and dip pipes. For further detailed information on the above, or technical design details of specific products, contact: Website laron (Plastics) Ltd. lders Way, Yalberton Industrial Estate, Paignton, evon TQ4 7QL. U.K. Tel: +44 () Fax: +44 () plastics@claron.co.uk laron Hydraulic Services. lders Way, Yalberton Industrial Estate, Paignton, evon TQ4 7QL. U.K. Tel: +44 () Fax: +44 () services@claron.co.uk laron Hydraulic Seals Ltd laron Hydraulic Seals Ltd. manufacture a comprehensive range of high quality hydraulic and pneumatic sealing systems. The range encompasses the latest modern designs including one piece piston seals, Polyurethane rod seals, and wiper seals. The product ranges meet European, merican, and sian housing standards and are manufactured in materials including rubber fabric, Polyurethane, modified P.T.F.E. s and other high performance compounds. laron also provides a range of customer related services including the supply of seal kits packaged to meet the requirements of both production and after market sales. laron Hydraulic Services laron Hydraulic Services manufacture an extensive range of standard seals, Bearing rings, Backup rings, and PTFE ORings supplemented by an unsurpassed capability for custom designed products and the high quality production of complex components to customer specification. laron s knowledge and expertise also includes the use of other specialist engineering plastics such as PTFE, PEEK, UHMWPE, POM, P, etc. and the production of various products in designs and sizes to meet other European, sian, and merican housing standards. For further information on these and any other plastic sealing products, contact: ontact: laron Hydraulic Seals Ltd. Station Road, radley Heath, Warley, West Midlands. B64 6PN U.K. Tel: +44 () Fax: +44 () sales@claronseals.co.uk G1