| 摘要 |
A composite radial seal for sealing the rod end of a hydraulic cylinder or suspension strut is disclosed. The composite seal includes a high abrasion resistant elastomeric seal ring having an elongated body. The body has a pressure end and a non-pressure end, with the pressure end having a U-cup configuration and a first dynamic seal lip and the non-pressure end having an enclosed annular cavity and a second dynamic seal lip. The cavity contains and is filled with a highly resilient energizer ring. Seal also includes an integral anti-extrusion ring that is bonded to the non-pressure end of the seal ring body adjacent and on the non-pressure side of the second seal lip to prevent extrusion of the seal lip into a clearance gap between a rod and a head of the cylinder or strut.
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