| 摘要 |
A guide ring having a seating surface of 'U'-shaped cross-section. A plurality of the guide rings may be carried by a piston, piston rod or the like in abutting relation to provide a continuous imperforate surface, or axially spaced from one another with a sealing member interposed between adjacent rings, the sealing member being biased into its operative position by fluid pressure. A ring of resilient material is positioned radially inwardly of the rings and sealing member and is provided with chamfered surfaces which are acted on by biasing means. A sealing arrangement is also provided comprising ring seals and/or stripper rings disposed in a groove in a piston or piston rod and formed of soft material with a lip seal in contact with a surface to be sealed. A shaped sliding ring of abrasion-resistant material which bears on the surface to be sealed is disposed in the ring seal and/or stripper ring. |
