Patent ID: 6962343

Claim:
A seal structure including a seal ring, said seal structure comprising a first seal portion for sealing one of two members assembled coaxially to be rotatable relative to each other, a second seal portion for sealing a side surface of an annular groove of the other member by coming into linear contact therewith for sealing an annular gap between said two members, a cut portion provided at one position in a circumferential direction of a ring body, a first arcuate convex portion projecting in the circumferential direction being provided at a first cut end portion, and a second stepped portion fitted into the first arcuate convex portion being provided at the second cut end portion; and a part of a cut surface, extending in the circumferential direction, out of said first arcuate convex portion and said second stepped portion corresponds to a part of said second seal portion, said annular gap between said two members being sealed by a pressure applied to said seal ring toward a non-sealed fluid side from a sealed fluid side.