Externally adjustable mechanical seal

Details Externally adjustable mechanical seal Externally adjustable mechanical seal

1974-07-26

1976-04-06

Rothberg, Samuel B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277 74, 277 59, F16J 1540

Patent

active

039485307

ABSTRACT:
A high pressure mechanical face seal for prevention of leakage along a rotary shaft, wherein a rotary seal ring is mounted in a holder supported on the rotary shaft and a stationary seal ring is mounted in a plate and has a sealing face engaging the end face of the rotary seal ring. A pair of axially spaced pressure areas on the external surface of the stationary seal ring communicate with pressure lines which are appropriately valved to provide settings for high pressure, low pressure or atmospheric pressure to be exerted on either one or both of the spaced areas and provide hydrostatic loading of the stationary seal ring; resulting in a distortion of the ring to provide either a full face contact, an internal diameter contact or an external diameter contact of the seal faces.

REFERENCES:
patent: 2738996 (1956-03-01), Andersson
patent: 3026112 (1962-03-01), Mayer
patent: 3034797 (1962-05-01), Pike
patent: 3144253 (1964-08-01), Schirmer
patent: 3174759 (1965-03-01), Schwing et al.
patent: 3318604 (1967-05-01), Tracy
patent: 3612544 (1971-10-01), Muller

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