Lip seal ring with improved sealing bond

Details Lip seal ring with improved sealing bond Lip seal ring with improved sealing bond

1991-02-20

1992-07-07

Peters, Jr., Joseph F.

Brakes

Internal-resistance motion retarder

Including seal or guide

277188R, 92165R, 92168, F16F 712

Patent

active

051274973

ABSTRACT:
A lip seal ring for circumferentially contacting and sealing a shaft movable relative to the lip seal ring includes an elastomer ring having a sealing lip and an adhering face and a stiffening ring made of a deformation-resistant material. The stiffening ring is bonded to the elastomer ring at the adhering face. The stiffening ring is made of a phenolic resin, a polyamide resin or a polyimide resin. The elastomer ring is made of an oil-resistant elastomer based on a nitrile-butadiene rubber or a derivative thereof, and polyethylene or polypropylene.

REFERENCES:
patent: 3307883 (1967-03-01), Wastenhagen
patent: 3856287 (1977-12-01), Freitag
patent: 3910387 (1975-10-01), Nicholls
patent: 4736824 (1988-04-01), Dony
patent: 4750594 (1988-06-01), Siemann
patent: 4807890 (1989-02-01), Gorman
patent: 4852862 (1989-08-01), Bauer
patent: 5011121 (1991-04-01), Oriola et al.
patent: 5015000 (1991-05-01), Perini
patent: 5020421 (1991-06-01), Podlesak

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