| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seal ring and a seal structure excellent in product quality capable of maintaining stable sealing performance for a long period of time without bringing about a cost increase. <P>SOLUTION: A protruding portion 5 protruding toward a groove bottom 73 is formed on an inner peripheral surface arranged so as to face the groove bottom 73 of an annular groove 71 out of peripheral surfaces of the seal ring 1, and the seal ring 1 is installed to the annular groove 71 having the groove bottom 73 having a notch 74 corresponding to the protruding portion 5, thereby regulating relative movement between a shaft 70 and the seal ring 1. Further, a tip is formed in a taper shape in both of the axial direction and the peripheral direction in the protruding portion 5, whereby seal performance is secured even in the case that a step is generated in the groove bottom 73 due to a long-term use. <P>COPYRIGHT: (C)2008,JPO&INPIT |
