| 摘要 |
<p>Between two mechanical parts (11, 12) rotatably connected together by a pin (13) there is defined a chamber (15) housing a spacer (17) for the parts (11, 12) and a gasket (16) formed of an annular seal element (18) with a substantially J or L-shaped cross-section and an elastic annular pressing element (19) surrounding the seal element (18). The seal element (18) has at least its sealing portion (21) formed of a very hard material and also has a large sealing surface (30) which is mirror-machined. The hardness of the material and the large mirror surface prevent abrasive particles penetrating and conglomerating in the material of the seal element (18), thus preventing erosion of the mechanical part against which the seal element (18) acts, while ensuring a perfect hydraulic seal.</p> |
