Merkel U-Ring Seal Set 0216

Transcription

1 Merkel U-Ring Seal Set 0216 Merkel U-Ring Seal Set 0216 NBR U-ring Backring Fabric U-ring NBR Cotton fabric Code 80 NBR B246 BI-NBR B4 B248 Back-up ring Fig. 1 Merkel U-Ring Seal Set 0216 Product description Two-piece Merkel seal set comprising an elastomer U-ring with an elastomer sealing edge, fabric reinforcement on the contact area and an active back-up ring. Merkel U-Ring Seal Set 0216 can also be used for pneumatic applications. Product advantages Single-acting rod seal for use in hydraulics and pneumatics Low friction due to fabric part Large range of dimensionse Protection against extrusion through activated back-up ring Low deformation value (not suitable for sealing systems) Easily installed in non-axial housings From 100 mm diameter. Application Pneumatic applications. D Code <300 mm Polyacetal POM POM PO202 >300 mm Polyamide PA 6.G200 Other materials like PTFE bronze back-up ring on enquiry. Operating conditions 80 NBR B246/BI-NBR B4B248/ POM PO NBR B246/BI-NBR B4B248/ PA 6.G200 Temperature range in C Hydraulic oils HL, HLP HFA fluids HFB fluids HFC fluids HFD fluids Water HETG (rapeseed oil) HEES (synthetic esters) HEPG (glycol) Mineral greases Pressure p in MPa Hydraulic 25 or 40* Pressure p in MPa Pneumatic 5 Running speed v in m/s 1,5 * max. pressure depends on the profile For Merkel U-Ring Seal Sets 0216, if long strokes are traversed, the max. pressure should only be applied to the last part of the stroke (closing pressure); during the stroke max. 16 MPa. Surface quality Surface roughness R a R max Sliding surface 0,05 0,3 µm 2,5 µm Groove base 1,6 µm 6,3 µm Groove flanks 3,0 µm 15,0 µm Percentage contact area M r >50% to max. 90% at cutting depth c = Rz/2 and reference line C ref = 0%.

2 Design notes Please observe our general design notes in Technical Manual. Gap dimension X2 The decisive factor for the function of the seal is the largest gap dimension occurring during operation on the non-pressurised side of the seal. Technical Manual. Profile 16 MPa 26 MPa 32 MPa 40 MPa D d X2 D d X2 D d X2 D d X2 <15 H10 f7 1,2 H10 f7 1,0 H10 f7 0,65 H10 f7 0,5 >15 H10 f7 1,8 H10 f7 1,4 H10 f7 0,90 H10 f7 0,7 The dimensions D1 and DF are to be viewed in connection with the sealing component used. Tolerance recommendation The admissible gap width, tolerances, guide play and deflection of the guide under load are to be taken into account when designing d2. Technical Manual. Fitting & installation Careful fitting is a prerequisite for the correct function of the seal. Technical Manual.

3 Article list H L +0, 2 R1 0, 4 20 Ø Ø d D C Ø D2 d D H L Profile C Article No ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D ,5 80 NBR B D NBR B D ,5 80 NBR B D NBR B D ,5 80 NBR B D NBR B D ,5 15 7,5 80 NBR B D ,5 80 NBR B D ,5 15 7,5 80 NBR B D ,5 80 NBR B D NBR B D NBR B D NBR B D ,5 15 7,5 80 NBR B D ,5 15 7,5 80 NBR B D NBR B D NBR B D NBR B D ,5 80 NBR B D NBR B D , NBR B D NBR B D ,5 80 NBR B D NBR B D ,5 80 NBR B D B Available from stock D On request: Tool is available, delivery at short notice

4 d D H L Profile C Article No , ,5 80 NBR B D , ,5 80 NBR B D ,5 80 NBR B D B Available from stock D On request: Tool is available, delivery at short notice

5 The catalog details are based on the experience of many years of research in the development and production of seals in the Freudenberg Group and correspond to our current level of knowhow. The sealing action of many catalog products is, however, not only created by the component itself. In many cases depending on the specifi c application it depends signifi cantly on the other parameters, such as installation point, counter surface, pressure, operating temperature, media to be sealed, lubrication, effects of vibration and any ingress of dirt from outside. These and other unknown factors in practical use may noticeably infl uence the functioning of the seals. Against this background generalised statements on the function of the catalog products are not possible. Details in this catalog merely represent general and non-binding reference values which make no claim to be valid for every application. We therefore recommend you to always discuss specifi c applications with our consultancy service. In the event of very high and special loads, for example due to aggressive media, the seal should be selected in co-operation with us; trials to check the functional reliability are often indispensable. Merkel Freudenberg Fluidtechnic GmbH Industriestr. 64 D Hamburg Tel.: +49(0)40/ Fax: +49(0)40/ merkel@freudenberg.de