Lip seal for a rotary shaft

Details Lip seal for a rotary shaft Lip seal for a rotary shaft

1993-09-16

1996-04-02

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277208, F16J 1532

Patent

active

055034080

ABSTRACT:
A seal assembly is mounted on a shaft in sealing relationship to provide a sealed chamber in a housing from which the shaft extends. The seal assembly includes a unitary annular seal body attached to an annular retainer. The seal body includes three radial sealing lips in engagement with the shaft. A primary lip is adjacent the sealed chamber and provides the primary fluid seal. A secondary lip is rearward of the primary lip and keeps the primary lip aligned with the shaft. A rearward lip excludes environmental contaminants from entering the sealed chamber.

REFERENCES:
patent: 3940155 (1976-02-01), Baumle
patent: 3942336 (1976-03-01), Schultenkamper
patent: 3955859 (1976-05-01), Stella et al.
patent: 4243232 (1981-01-01), Repella
patent: 4721314 (1988-01-01), Kanayama et al.
patent: 5052696 (1991-10-01), Hatch

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