| 摘要 |
Provided is a sealing device configured so that, irrespective of a rotational direction, rotational torque can be reduced and the leakage of sealed fluid can be prevented. A seal ring (100) slides relative to the low pressure-side sidewall surface of an annular groove. The seal ring (100) has, provided in the slide surface thereof which slides relative to the sidewall surface, a dynamic pressure generation groove (120) having: a first groove (121) circumferentially extending with a constant radial width; and a second groove (122) extending from the circumferential center of the first groove (121) up to the inner peripheral surface thereof and conducting sealed fluid into the first groove (121). The seal ring (100) is characterized in that the first groove (121) is provided at a position within a slide region sliding relative to the sidewall surface. |
