| 摘要 |
An annular seal assembly between concentric sidewalls which will not prevent the sidewalls from being moved axially with respect to one another. The seal assembly is positioned by two lips, one on each sidewall and has a seal wall engaging one of the lips, a sealing ring engaging against the seal wall, the sealing ring being urged away from the lip on which said sealing wall is mounted and towards the other lip and a seating surface which is connected with the other lip and moveable away from the sealing ring when the other lip is moved axially. |
