Low friction unitized seal

Details Low friction unitized seal Low friction unitized seal

1992-07-13

1993-05-04

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 35, 277 962, 277152, 384147, 384484, F16J 1532

Patent

active

052074366

ABSTRACT:
A unitized seal incorporates two nested steel casing, a PTFE disk with two edges in sealing contact with one casing, and an elastomer seal with two lips in sealing contact with the back of the PTFE disk. The PTFE disk provides two primary, low friction sealing barriers. The elastomer seal provides two additional barriers, which comply more readily than the edges of the stiffer PTFE disk to radial eccentricity and axial run out. The elastomer seal lips run with reduced friction because of the fact that they contact the PTFE disk.

REFERENCES:
patent: 3099454 (1963-07-01), Walinski
patent: 3101954 (1963-08-01), Huddle
patent: 4185838 (1980-01-01), Danner
patent: 4497495 (1985-02-01), Christiansen
patent: 4516783 (1985-05-01), Mitsue et al.
patent: 4572516 (1986-02-01), Symons et al.
patent: 4792242 (1988-12-01), Colanzi et al.
patent: 4958942 (1990-09-01), Shimizu
patent: 5024364 (1991-06-01), Nash
patent: 5024449 (1991-06-01), Otto
patent: 5121999 (1992-06-01), Johnson et al.

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