Unitized radial shaft seal

Details Unitized radial shaft seal Unitized radial shaft seal

1991-06-25

1993-02-16

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 38, 277 53, 277152, 277153, F16J 1534

Patent

active

051864720

ABSTRACT:
A unitized seal includes a first seal casing having a radially-extending unitizing flange and a second seal casing having an annular elastomeric bumper. The bumper has an engagement surface which confronts the unitizing flange for engagement therewith. Upon installation of the seal, the unitizing flange compresses the bumper. Upon initial rotation of the seal, the unitizing flange slices into the bumper so as to form a labyrinth-type seal. This arrangement reduces running torque and seal lip temperature.

REFERENCES:
patent: 2336323 (1943-12-01), Warren
patent: 3339933 (1967-09-01), Foster
patent: 3341265 (1967-09-01), Paterson
patent: 3823950 (1974-07-01), Pedersen
patent: 4049281 (1977-09-01), Bainard
patent: 4402515 (1983-09-01), Malott
patent: 4448426 (1984-05-01), Jackowski et al.
patent: 4643436 (1987-02-01), Jackowski
patent: 4936591 (1990-06-01), Romero
patent: 5004248 (1991-04-01), Messenger et al.
patent: 5129744 (1992-07-01), Otto et al.

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