Shaft seal

Details Shaft seal Shaft seal

2005-02-01

2005-02-01

Miller, William L. (Department: 3677)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S358000, C277S367000

Reexamination Certificate

active

06848689

ABSTRACT:
A shaft seal in which a rotary sealing part is mounted coaxially with the sealing element and forms therewith a contactless primary seal between opposed faces of the sealing element and rotary sealing part to substantially prevent fluid flow across the primary seal from a high pressure radial side to a low-pressure radial side. An auxiliary sleeve forms a small gap between it and a seal housing and maintains the gap despite the presence of relatively high pressure at the high pressure radial side.

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