| 摘要 |
Provided is a seal ring that is designed to achieve a stable sealing performance while reducing the rotational torque. A seal ring (100) that makes intimate contact with a low-pressure-side (L) side wall surface of an annular groove (510) and slides against an inner circumferential surface of a shaft hole of a housing (600) through which a shaft (500) is inserted, is characterized in that, on an outer circumferential surface side thereof, a pair of concave portions (130) extending in a circumferential direction is provided on either side in a width direction, wherein a distance between a side surface on one side of a convex portion (120) that is disposed between the pair of concave portions (130) and a side surface on another side of the seal ring (100), and a distance between a side surface on another side of the convex portion (120) and a side surface on one side of the seal ring (100) are set to be shorter than a distance between an inner circumferential surface of the seal ring (100) and an outer circumferential surface of the convex portion (120). |
