Track pin seal

Details Track pin seal Track pin seal

1979-08-09

1984-09-04

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

305 11, F16J 1532, F16J 1534

Patent

active

044693362

ABSTRACT:
A unitary seal comprises an annular support section formed of a rigid polycarbonate plastic and an annular sealing section formed of a flexible polyurethane elastomer. The support and sealing sections are directly bonded together without the use of an adhesive therebetween to form a unitary seal. The sealing section has an annular lip extending from one side of the support section and adapted for sealing engagement with a member.

REFERENCES:
patent: 2487669 (1949-11-01), Pattullo et al.
patent: 3069287 (1962-12-01), Hudson
patent: 3200615 (1965-08-01), Stokely
patent: 3437385 (1969-04-01), Deli
patent: 3601419 (1971-08-01), Fern
patent: 3657057 (1972-04-01), Shorr et al.
patent: 3848881 (1974-11-01), Ginn
patent: 3913924 (1975-10-01), Barefoot
patent: 4026563 (1977-05-01), Bainard
patent: 4066269 (1978-01-01), Linne
A Processing Handbook for TEXIN.RTM. Urethane Elastoplastic Materials.
Dual-Material Molding of Radial Lip-Type Oil Seals, Caterpillar Tractor Co. Research Lab., Dec. 3, 1970.

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