| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealing device having fewer parts, excellent in quality, and equipped with a bearing capability, and also to provide a sealing structure equipped with this. <P>SOLUTION: The sealing device, which comprises a first ring 10 which is installed in a first annular groove 51 slidably with respect to this first annular groove 51 and consists of hard material, and a second ring 20 made of rubbery elastic body which is installed in a second annular groove 52, and pushes the first ring 10 toward an inner peripheral surface of a bearing hole 61, wherein in the first ring 10, an annular convex 11 is provided, which is constituted so that it enters the second annular groove 52 to prevent the second ring 20 from projecting into a clearance between the first ring 10 and a piston 50 through close contact with a side wall surface of the second annular groove 52 by a first ring slide caused by a pressure of a sealing target fluid, and is arranged coaxially with an axis T of the piston 50. <P>COPYRIGHT: (C)2010,JPO&INPIT |
