Grooved run-in face seal

Details Grooved run-in face seal Grooved run-in face seal

1996-02-14

1996-11-19

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 961, F16J 1534

Patent

active

055754864

ABSTRACT:
An oil seal for sealing off a fast rotating shaft (10) relative to a housing (11) comprises a first seal element (15) mounted on the shaft (10), a second seal element (18) resiliently mounted in the housing (11), both seal elements (15, 18) having cooperating contact surfaces (25, 26), and a spring (22) acting on the second seal element (18) to provide an axial contact pressure between the contact surfaces (25, 26). The contact surfaces (25, 26) of the seal elements (15, 18) are made of materials of different hardness, and the one consisting of the hardest material is formed with one or more circular ribs (27a-c) disposed concentrically with the shaft (10) and intended to cut mating circular grooves in the other seal element contact surface (25) during a running-in period.

REFERENCES:
patent: 2347118 (1944-04-01), Matter
patent: 2668068 (1954-02-01), Bredemeier
patent: 3515393 (1970-06-01), Metcalfe
patent: 3755870 (1973-09-01), Young et al.
patent: 4391450 (1983-07-01), Beck
Patent Abstracts Of Japan, vol. 9, No. 94 (M-374) (1817), Apr. 24, 1985 & JP-A-59 219 577 (Arai Seisakusho) Dec. 10, 1984.

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