O-Rings & Circlips Catalogue

Transcription

1 O-Rings & Circlips Catalogue 1

2 2

3 Contents O-Rings Table of Groove Dimensions for Dynamic & Static Sealing... 4 Resistance Properties of Various Elastomers... 5 Temperature Requirements... 6 Imperial: Guide to Standard Inch Sizes... 7 Metric: British Range to BS Metric: European (German) Range Circlips Standard Internal Circlips (Euro Specification) D Standard External Circlips (Euro Specification) D Standard Series E Clips D Standard Series E Clips N

4 O-Rings: Table of Groove Dimensions for Dynamic & Static sealing Groove Dim ensions Dynam ic Application Static Application Cross Section Depth Reciprocating Width Rotary Flange Seal Groove Depth Groove Width Groove Radius R +0,00 +0,10 +0,10 +0,00 +0,10-0,05-0,00-0,00-0,05-0,00 1,0 to 1,02 0,81 1,57 1,20 0,68 1,57 1,2 1,00 1,80 1,40 0,82 1,80 1,25 to 1,27 1,04 1,85 1,45 0,85 1,85 1,3 1,10 1,90 1,50 0,88 1,90 1,42 1,16 2,08 1,60 0,96 2,08 1,50 to 1,52 1,24 2,16 1,70 1,02 2,16 1,60 to 1,63 1,30 2,20 2,10 1,10 2,20 1,78 1,45 2,40 2,30 1,20 2,40 1,83 1,50 2,45 2,35 1,20 2,45 1,98 to 2,0 1,60 2,70 2,50 1,50 2,70 2,08 1,70 2,75 2,50 1,60 2,75 2,21 1,80 3,00 2,55 1,70 3,00 2,4 2,10 3,25 2,70 1,90 3,25 2,46 2,15 3,30 2,75 1,95 3,30 2,50 2,20 3,40 2,80 2,00 3,40 2,62 2,30 3,60 2,90 2,10 3,60 2,75 2,45 3,70 3,10 2,20 3,70 2,95 to 3,0 2,65 4,05 3,35 2,40 4,05 3,15 2,85 4,25 3,50 2,50 4,25 3,5 to 3,53 3,10 4,80 3,90 2,80 4,80 4,0 3,55 5,50 4,35 3,30 5,50 4,5 4,00 6,20 4,90 3,70 6,20 5,0 4,40 6,80 5,50 4,10 6,80 5,33 4,80 7,20 5,80 4,40 7,20 5,5 4,95 7,50 6,30 4,55 7,50 5,7 5,15 7,80 6,35 4,70 7,80 6,0 5,40 8,20 6,70 4,95 8,20 6,3 to 6,35 5,55 8,60 7,00 5,20 8,60 0,2 0,5 1,0 7,0 6,10 9,50 7,80 5,80 9,50 8,0 7,20 10,80 8,90 6,70 10,80 8,4 7,55 11,40 9,40 7,00 11,40 10,0 9,00 13,70 11,20 8,30 13,70 12,0 10,40 16,40 13,40 10,00 16,40 4 1,5

5 O-Rings: Resistance Properties of various elastomers We must emphasise that this chart should only be used as a guide. Final selection should be based on functional evaluations or experience under actual end use conditions. Buna-N Nitrile Ethylene Propylene Neoprene Urethane Silicone Fluoro-silicone Fluoro-elastomer Viton Poly-acrylate Kalrez / Zalak Perfluorelastomer ASTM CODE 1992 NBR EPDM CR AU VMQ FVMQ FKM AC FFKM FEP ISO code 1987 NBR EPM CR EU VMQ FVMQ FPM ACM FPM FEP Hardness Shore A Oct Tensile Strength (psi) Tearing Strength G G VG E N N G G G G Wear Resistance G G G VG N N G VG G G Teflex Fire-proof Hyd. Fluids N VG R N G VG R-N N E E Lubricating Oils G N G VG G E E VG E E Fuel Oils G N G VG R E E VG E E Hydraulic Oils E N G VG G E E U E E Vegetable Oils E R G VG G E E U E E Animal Fats E R G VG G E E U E E Petrol (Normal) VG N R VG R E E VG E E Petrol (High Octane) G N N VG N E E G E E Kerosene VG N R VG R E E VG E E Aromatic Hydrocarbons R N N G N E E R E E Aliphatic Hydrocarbons VG N G VG R E E VG E E Water (< 80 C) VG E R R-N E E E N E E Water (> 80 C) R E N N E VG G N E E Alcohols VG E N N E VG G N E E Ketones N G N N G N N N E E Concentrated Acids N R N N R G VG N E E Diluted Acids R G G N G VG E N E E Alkalis R VG G N G R G N E E Chlorinated Solvents R N N R-N N E E R E E Ozone & Sunlight R E VG VG E E E VG E E Max. temp at continuous 250 C to 204 C to service 110 C 135 C 105 C 80 C 230 C 205 C 205ºC 175 C 316 C 260 C Electrical Properties N E VG G E E E N E E Compression Set VG G VG N E VG R G G G Flame Resistant No No Yes No No No Yes No Yes Yes E = Excellent; VG = Very Good; R = Reasonable; N = Not Recommended; U = Unsuitable 5

6 O-Rings: Temperature Requirements When considering a choice of compound, both high and low limits as well as operating temperature must be taken into consideration, together with the anticipated time element of each extreme. The parameters shown in the chart below are based upon average conditions for a period of approximately one thousand hours. Most base polymers will be capable of exceeding the recommended temperature guide for short intermittent periods. Another important point to be considered in very critical conditions is the fact that rubber when exposed to extended periods of hight temperature will expand, and therefore it may be necessary to increase the Viton FEP Tetrafluoroethylen Polyurethane Polyacrylate P.T.F.E Fluorosilicone Silicone Fluorocarbon Chloroprene Ethylene Nitrile Centigrade area of the groove, and in opposing conditions rubber exposed to prolonged periods of low temperature will tend to contract and a reduction of groove size may be desirable, or alternatively a higher degree of squeeze should be allowed for during initial design. 6

7 O-Rings: Quick Guide to Standard Inch Sizes Size reference numbers quoted are in accordance with BS 1806:1989 and AS 568A:1984 Nominal Section Nominal Section Nominal Section I.D. 1/16 3/32 1/8 3/16 1/16 3/32 1/8 3/16 1/4 3/32 1/8 3/16 1/4 I.D. I.D. Actual Size Actual Size Actual Size (1.78) (2.62) (3.53) (5.33) (1.78) (2.62) (3.53) (5.33) (7.00) (2.62) (3.53) (5.33) (7.00) BS Number BS Number BS Number 1/ / / / / / / / / / / / / / / / A 5/ / / / / / A 7/ / / / / A 5/ / / / / / A 7/ / / /4 449A 9/ / / /4 450A 5/ / / / /4 451A 3/ / / / / /4 452A 7/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /

8 O-Rings: British Metric Range to BS 4518 Items marked * are suitable for dynamic applications d 5 d 4 Tolerance on d1 +/- d 5 d 4 Tolerance on d1 +/ / / * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * / * * * /

9 O-Rings: British Metric Range to BS 4518 (cont.) Items marked * are suitable for dynamic applications d 5 d 4 Tolerance on d1 +/- d 5 d 4 Tolerance on d1 +/ / / * * * * * * * * * * * * * * * * * * * * * * * * / * * * * * * * * * / * * * * * * * * * * *

10 O-Rings: European (German) Metric Range Items marked * are suitable for dynamic applications / / / / * * * * * * * * * * / * * * * * * * * * * * / * * * * * * * * *

11 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications * * * * * * * / * * * * * * * * * / / * / * * * * * * * / * * * * * * * * * * * * * * * * * * *

12 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications * * * * * * * * * * * * * * * * * * * * * * * * / * * * * / / * / * * * * * * * * * * * * * * * * * * * * * / * * *

13 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications / / / /

14 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications * * * * * * * * * * * * * * * * * * * * * / * * * * * * * / / * / * * * * * * * * * * * * * * * * * * * * * * * * * * * / * * * * * * * * * *

15 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications * * * * * * * * * * * / / / /

16 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications / / / / * * * * / * * *

17 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * / * / / / * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

18 O-Rings: European (German) Metric Range (cont.) Items marked * are suitable for dynamic applications / / / /

19 Circlips Catalogue 19

20 Standard Internal Circlips (Euro Spec.) D1300 incorporating DIN 472 & BS3673 Pt. 4 20

21 Standard Internal Circlips (Euro Spec.) D1300 (continued) 21

22 Standard External Circlips (Euro Spec.) D1400 incorporating DIN 471 & BS3673 Pt. 4 22

23 Standard External Circlips (Euro Spec.) D1400 (continued) 23

24 Standard Series E Clips D1500 incorporating DIN 6799 & BS 3673/2 Metric Series 24

25 Standard Series E Clips N1500 incorporating BS 3673 Pt 2 and MIL-R / MS