| 摘要 |
There is described a seal assembly (1) for sealing the gap (2) between a rotary member (4) and a fixed member (3), so as to prevent passage of a fluid from a first (5) to a second (6) environment located on opposite sides of the gap (2); the seal assembly (1) has a first ring (7) integral with the rotary member (4), a second ring (8) integral with the fixed member (3), and an elastically deformable sealing member (9) integral with the second ring (8) and in turn having at least one lip (20) cooperating in fluidtight manner with a mating portion (11) of the first ring (7); and, on the side cooperating with the mating portion (11), the sealing member (9) has a spiral groove (27) which, in use, produces a fluid-dynamic pumping effect to pump the fluid away from the sealing area and towards the first environment (5). <IMAGE> |
