Secondary seal for a sealing arrangement

Details Secondary seal for a sealing arrangement Secondary seal for a sealing arrangement

1998-03-20

2000-07-25

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277397, 277589, 277914, F16S 1538

Patent

active

060928093

ABSTRACT:
A sealing arrangement for sealing lubricating oil in and debris out of a final drive of an earth moving machine is disclosed. The sealing arrangement includes a secondary seal for use in severe environments to protect a primary oil seal. The secondary seal is disposed radially outboard of the primary seal and includes a continuous annular ring having a wear resistant reinforced composite sealing portion. The sealing portion is constructed of a cured mix of an elastomer and reinforcing fibers, having an axial sealing face positionable in dynamic sealing contact with a radial surface of a first member of the final drive.

REFERENCES:
patent: 3540743 (1970-11-01), Ashton et al.
patent: 3940154 (1976-02-01), Olsson
patent: 4105214 (1978-08-01), Schexnayder
patent: 5695201 (1997-12-01), Wheeler
patent: 5842701 (1998-12-01), Cawthorne et al.

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