| 摘要 |
1. A single-acting hydraulic sealing fitting, which ensures in particular dynamic sealing between a rod guide (4) and a piston rod (23) which slides and/or rotates in the said guide, and separates two enclosures, one of which is under pressure and the other of which is open to the atmosphere, said fitting being in the form of a compact assembly of a ring (1) and a thrust ring (2), mounted in an open channel (3) of the rod guide (4) limited by a single shoulder (5), one end of the ring (1) forming a sealing lip (9) situated perpendicular to the thrust ring (2) and subjected to the action of the latter, characterised in that the end of the ring (1) - whose main body has a guiding function - opposed to the pressure is provided with means (11 to 16) ensuring both the scraping of the piston rod (23) and a latching which immobilises the fitting in its channel (3). |
