| 摘要 |
<p>A two-element sealing assembly comprises a first (5) and second (6) annular element each of which can be mounted on one of the said members (2, 4) and rigidly connected to it, the first (5) of the said annular elements being provided with at least one pair of annular lips (12, 13) of resiliently deformable material, a first (12) of which extends in a direction substantially parallel to the axis of the said first element (2) and a second (13) of which extends in a direction substantially radial to the said axis, and the second (6) of the said annular elements being provided with at least a first (20) and a second (21) sliding surface which can come into contact with the said first (12) and second (13) lip respectively when the said elements are mounted on associated rotating members (2, 4), in such a way that between each of the said lips (12, 13) and the associated sliding surfaces (20, 21) there is transmitted a predetermined pressure for preventtng the passage of lubricant and contaminating substances between the said chamber and the external environment.</p> |
