主权项 |
1. A seal ring which is mounted on an annular groove formed on one member consisting of either a housing having a shaft hole or a rotary shaft inserted into said shaft hole, contacts a surface of other member consisting of either said housing or said rotary shaft, and slidably contacts a side wall surface of said annular groove at a non-sealed fluid side thereof, thereby sealing an annular gap between said one member and said other member,
wherein V-shaped concave portions along a circumferential direction of said seal ring are formed on at least one portion of an end of an inner diameter side of a side surface of said seal ring serving as a sliding contact surface which contacts said side wall surface of said annular groove, wherein said concave portions do not contact said side wall surface of said annular groove. |