| 摘要 |
<p>A liquid seal unit having a seal ring (26) with an annular end face (76) cooperating with a seal mating ring (28) on an associated component to form a liquid-tight dynamic seal. A composite multifunctional member (24) with a flexible finger spring (30) embedded in a unitary elastomeric body (32) urges the seal ring (26) and the mating ring (28) together. The spring (30) has an annular continuous outer body portion (52) and a plurality of circumferentially spaced apart, radially inwardly extending flexible spring fingers (54). The unitary elastomeric body (32) includes a radially outer mounting collar (62) with a generally radially inwardly directed inner surface, a web portion extending radially inwardly from the outer collar (62) and enclosing the flexible finger spring (30). The body (32) also includes radially spaced, first and second annular load bearing formations (64,66) that lie in axially opposite directions. The elastomeric body (32) still further includes an axially extending sealing ring positioning collar (70) engaging the seal ring (26) to provide a secondary seal. The positioning collar (70) responds to an axially outward deflection of the spring fingers (54) by deflecting radially inwardly to increase the radial load exerted on the seal ring seating surface. <IMAGE> <IMAGE></p> |
