| 摘要 |
PURPOSE: To prevent oil leakage by applying a high-pressure oil to the inner circumferential surface of a seal ring that has been made of polyether ether ketone, because its self-tension is weak, so that the deficiency of self-tension can be compensated. CONSTITUTION: A seal ring 20 is made small in thickness except an abutment 23, and the abutment 23 having a larger thickness is made up of a first abutment 26, a second abutment 29, and a third abutment 31. |
