S9B seals

Hydraulic seals - Rod and buffer seals - S9B

S9B seals are buffer seals with slide rings and feature a nitrile rubber (NBR) O-ring energiser and a PTFE slide ring. Depending on the application, SKF can manufacture the slide rings from various PTFE materials. On request, SKF can also supply these profiles with X-ECOPUR polyurethane (TPU) slide rings for improved wear resistance and easier installation compared with PTFE. S9B profiles with a PTFE slide ring are suitable for pressures up to 400 bar (5 800 psi), while those with an X-ECOPUR slide ring are suitable up to 600 bar (8 700 psi). These profiles are suitable for medium- and heavy-duty applications. Both material combinations are available in metric and inch sizes, with some metric sizes fitting seal housings in accordance with ISO 7425-2:1989 or ISO 3320:2013.