| 摘要 |
A liquid seal unit having a seal ring with an annular end face cooperating with a seal mating ring on an associated component to form a liquid-tight dynamic seal. A composite multi-functional member with a flexible finger spring embedded in a unitary elastomeric body urges the seal ring and the mating ring together. The spring has an annular continuous outer body portion and a plurality of circumferentially spaced apart, radially inwardly extending flexible spring fingers. The unitary elastomeric body includes radially spaced, first and second annular load bearing formations that extend in axially opposite directions. The elastomeric body still further includes an axially extending sealing ring positioning collar lying radially between the load bearing formations and having an inner surface that engages a seating surface in the seal ring to provide a secondary seal. The seal ring positioning collar responds to an axially outward deflection of the spring fingers by deflecting radially inwardly to increase the radial load exerted on the seal ring seating surface.
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