| 摘要 |
A seal for use with an annular piston which may be used in a hydraulic system for actuating disc brakes or clutches of drivetrain subassemblies. The seal may be used with a piston having a relatively large average diameter and a relatively small radial thickness, with the piston being disposed, and axially moveable, within an annular passage having a pair of generally cylindrical, opposing side walls. The seal is made of an elastomeric material and comprises first and second annular flange portions having a first end attached to the base portion and a second, free end. Each of the flange portions diverge away from the base portion so as to dispose the corresponding free end in sealing engagement with one of the passage sidewalls. The base portion of the seal is bonded to an end surface of the piston and the seal further includes a plurality of circumferentially spaced ribs interconnecting the first and second flange portions.
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