Machined shaft seal encased in an elastomeric sleeve

Details Machined shaft seal encased in an elastomeric sleeve Machined shaft seal encased in an elastomeric sleeve

1993-12-17

1995-01-10

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 47, 277152, 277165, 277227, F16J 1532

Patent

active

053800150

ABSTRACT:
A manually assembled shaft seal assembly includes a plastic sealing element having an annular tubular mounting portion and a shaft-engaging sealing lip. An annular elastomeric sleeve extends around the inner and outer surfaces of the tubular mounting portion to provide a resilient mounting mechanism for the shaft seal assembly. During service at high operating temperatures, the elastomeric sleeve absorbs and accommodates stresses generated in the plastic tubular portion of the sealing element by thermal expansion. The elastomeric sleeve is in a compressed condition when mounted within a shaft seal housing so that it can expand slightly, if necessary, to compensate for shrinkage or creep in the plastic material, such that the seal assembly is prevented from becoming loose in the shaft seal housing.

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