Manufacture of sealing elements of composite sintered polymeric

Details Manufacture of sealing elements of composite sintered polymeric Manufacture of sealing elements of composite sintered polymeric

1989-07-12

1991-07-16

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264118, 264120, 264127, 264159, 264248, B29C 4320, B32B 110

Patent

active

050323350

ABSTRACT:
A sealing element for use with a radial lip oil seal includes a mounting section formed of a first polymer and a sealing section formed of a second polymer. The sealing element sections are bonded together during a common sintering operation so that each polymer is sintered only once. This reduces molecular degradation of the polymers typically caused by multiple sintering operations.

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patent: 4243235 (1981-01-01), Repella
patent: 4364884 (1982-12-01), Traut
patent: 4391861 (1983-07-01), Nilsson
patent: 4900629 (1990-02-01), Pitolaj
patent: 4937025 (1990-06-01), Foster et al.

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