| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain a sliding surface from wearing by maintaining successful lubricity even under a severe sliding condition in a sealing ring 1 for reciprocating motion. <P>SOLUTION: The sealing ring 1 for reciprocating motion has the sliding surface 11 of which cross section cut on plane through axis O forms a substantially arcuate bulged shape and which slidably contacts the cylindrical surface 201 of an opponent material 200 closely in axial direction with appropriate squeeze. The sealing ring is formed with a plurality of lubricating grooves 14 extending in circumferential direction on the sliding surface 11. Then, the successful lubricity is maintained by part of sealed object liquid in the lubricating grooves 14 even under the severe conditions of high pressure and sliding distance. <P>COPYRIGHT: (C)2011,JPO&INPIT |
