Process of making radial lip seal

Details Process of making radial lip seal Process of making radial lip seal

1994-08-01

1995-10-24

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 264261, 264262, 264250, 264251, B29C 3918, B29C 3920

Patent

active

054606780

ABSTRACT:
A radial lip seal for sealing about a pin of a hinge joint is disclosed. Such seal includes an outer mounting ring, a rubber flex ring mounted inside the mounting ring, a tension ring mounted inside the flex ring, and an inner elastomeric seal ring mounted inside the tension ring. The seal ring has an inside diameter that is a sufficient amount smaller than the pin to cause the tension ring to be stretched by a predetermined amount when the seal is mounted about the pin. The tension ring is capable of exerting a radial force of at least 20 N/cm of circumference on the seal ring upon being stretched the predetermined amount. The unique construction of such a seal is effective in sealing out highly abrasive materials found in very severe operating applications, such as on earthmoving vehicles, and provides a seal having an extremely long service life in such applications.

REFERENCES:
patent: 4151999 (1979-05-01), Ringel et al.
patent: 4243235 (1981-01-01), Repella
patent: 4244588 (1981-01-01), Langewisch
patent: 4428589 (1984-01-01), Reinsma
patent: 5032335 (1991-07-01), Wilson

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