Shaft seal

Details Shaft seal Shaft seal

1982-10-12

1984-03-06

Smith, Robert T.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 65, F16J 1534

Patent

active

044349866

ABSTRACT:
A shaft seal has a pair of stationary, yet floating, seals which are biased into engagement with opposite sides of a mating ring carried on a rotating drive sleeve. The mating ring is maintained perpendicular to the axis of rotation and against a squaring surface of the drive sleeve. The location of a secondary seal pressure balances internal machine pressure at the primary seal at a ratio of 80:20, and provides a reverse pressure balance of greater than 100%.

REFERENCES:
patent: 2662480 (1953-12-01), Cliborn
patent: 3941395 (1976-03-01), Ball et al.
patent: 4328973 (1982-05-01), Delbridge
Type 88 Compact, Field Repairable Seal, Crane Packing Company Bulletin, No. S-2032.

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