Extended life mechanical face seal assembly

Details Extended life mechanical face seal assembly Extended life mechanical face seal assembly

1990-09-20

1992-06-23

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 22, 277 42, 277136, F16J 1536

Patent

active

051236605

ABSTRACT:
A rotary mechanical face seal utilizes a pair of cup-shaped inserts to closely support the contoured diaphragm of an elastomeric boot whereby the diaphragm does not actively undergo deflection to assist in sealing moving interfaces, even under fluctuations in pressure differentials acting on the diaphragm. A tubular insert is molded into the boot to assure that a fluid tight sealed securement is achieved with a bore to be sealed and accurately position components of the assembly so as to maintain the rotary sliding faces in full contact and compensate for axial tolerances of the components. A washer-shaped insert having raised lands raised from one of its axial faces can be embedded in a seal washer to ensure dimensional stability of a load bearing member and extend service life, the other axial face possibly being used as a portion of the sliding sealing faces.

REFERENCES:
patent: 2322834 (1943-06-01), Dornhofer
patent: 2474123 (1949-06-01), Schmitz
patent: 2744772 (1956-05-01), Amiranlt et al.
patent: 2785913 (1957-03-01), Solari
patent: 2824760 (1958-02-01), Gits
patent: 2899219 (1959-08-01), Payne
patent: 3191945 (1965-06-01), Andresen
patent: 3554559 (1971-01-01), Dahlheimer
patent: 4095807 (1978-06-01), Jandt et al.
patent: 4779876 (1988-10-01), Novosad

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