SEAL RING AND SEAL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a seal ring and seal structure having stable sealability without co-rotating together with a shaft even if rotation is applied to the reciprocating motion.

SOLUTION: A second ring body 36 is concentrically provided to a first ring body 34 having lip parts 40, 41 in the axial direction on the both ends capable of generating seal force by elastic force. The both ends 36a, 36b of the axial direction of the second ring body 36 are projected and located in the axial direction to the first ring body 34, and are made to be a holding surface pinched from the both ends in the axial direction by the member 7 equipped with the seal ring 21.

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