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Auxiliary seal for a bearing and bearing incorporating such a seal

Image Number 2 for United States Patent #5833372.

An auxiliary seal for a bearing includes a seal housing supported by the bearing housing, and a seal ring interference fitting around a mechanical element such as a shaft or sleeve supported for rotation by the bearing. The housing and sleeve include a series of rings that interface with one another to maintain the seal ring in place on the mechanical element. A face rubbing seal is supported on the seal ring and contacts a portion of the seal housing as the mechanical element rotates relative to the bearing housing. The seal ring has an integral backup portion which contacts the face rubbing seal to prevent the face rubbing seal from sliding axially away from the seal housing. A series of seal barriers are defined by the seal housing and seal ring, including contact seals, grease dams and labyrinth seals.

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