Elastomer dynamic annular seal between hydraulic actuator cylinder head and piston rod is constrained by compression ring and installed with it in rectangular groove housing

摘要

The annular seal (8) is constrained by a surrounding compression ring (12). It is installed with the ring in a rectangular groove (17) which separates the ring from the movement surface and downstream wall of the groove housing. The external diameter of the seal is equal to or greater than that of the bottom of the groove.