SELF-ADJUSTING CARTRIDGE SEAL.

摘要

A seal (20) includes a first seal retainer (62), a seal holder (64) and a second seal retainer (66). A somewhat cup-shaped recess of the first seal retainer opens in a first direction of motion of a movable member (42) against which the seal is to seal. The seal holder (64) includes a first somewhat cuplike portion adjacent to the first seal retainer (62) and a second somewhat cuplike portion more remote from the first seal retainer. The first somewhat cuplike portion opens in a second direction of motion opposite the first The second somewhat cuplike portion opens in the first direction. The second seal retainer (66) includes a first portion closer to the seal holder (64) and a second portion more remote from the seal holder. The second somewhat cuplike portion of the seal holder receives the first portion of the second seal retainer.