Pressure balanced mechanical seal assembly with encapsulated dou

Details Pressure balanced mechanical seal assembly with encapsulated dou Pressure balanced mechanical seal assembly with encapsulated dou

1990-11-06

1991-12-17

Cuchlinksi, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

2671414, 277 82, 277 93SD, F16J 1534

Patent

active

050729519

ABSTRACT:
A mechanical seal arrangement for use in association with a pump casing structure and a drive shaft for driving a pump impeller which is housed in the pump casing structure. The mechanical seal arrangement has a rotatable seal ring with a seal face mountable concentrically on the drive shaft for rotation with the drive shaft. A non-rotatable seal ring is provided having a seal face mounted in axial alignment with the rotatable seal ring assembly. Biasing means are provided for urging the rotatable and non-rotatable seal rings axially towards each other for effecting sealing engagement of the seal faces of the respective seal rings. The biasing means has at least two disk spring elements spaced apart and encapsulated in an elastomeric body, with the biasing means being located in use in a tensioned state between either one of the seal rings and the pump casing structure.

REFERENCES:
patent: 2961258 (1960-11-01), Donley et al.
patent: 3157404 (1964-11-01), Doble
patent: 3180650 (1965-04-01), Liebig
patent: 3363910 (1968-01-01), Toronchuk
patent: 3655205 (1972-04-01), Peterson
patent: 3938812 (1976-02-01), Coleman
patent: 4294953 (1981-10-01), Inouye et al.
patent: 4418919 (1983-12-01), Wentworth
patent: 4509762 (1985-04-01), Garrett
WEMCO Data Sheet, WEMCO-HIDROSTAL PUMPS, Submersible Pumps, P25S-D215, dated 2/1/85.

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