Radial lip oil seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

277153, 277208, 277227, F16J 1554

Patent

active

049696530

ABSTRACT:
A shaft seal includes a rigid case and an elastomeric seal body affixed thereto. The seal body member includes a primary sealing lip and a secondary sealing lip axially spaced from one another by an intermediate flex section. The sealing surfaces of both sealing lips are lined with a singular piece of low friction material in the form of a single annular wafer having radially inner and outer liner portions covering the primary and secondary sealing lips. The wafer is formed with a weakened material section intermediate the inner and outer annular liner portions for increasing the flexibility and independent operation of each sealing lip.

REFERENCES:
patent: 4239243 (1980-12-01), Bainard et al.
patent: 4311316 (1982-01-01), Cather, Jr.
patent: 4501431 (1985-02-01), Peisker et al.
patent: 4613143 (1986-09-01), Butler
patent: 4822058 (1989-04-01), Bulter et al.

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