Mechanical seal ring assembly with hydrodynamic pumping...

Details Mechanical seal ring assembly with hydrodynamic pumping... Mechanical seal ring assembly with hydrodynamic pumping...

2008-05-27

2008-05-27

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S403000

Reexamination Certificate

active

07377518

ABSTRACT:
A seal ring configuration adapted to be disposed about a shaft to seal a fluid at a pressure differentials across the seal. The seal ring configuration comprises a mating ring and an axially movable primary ring. The primary ring includes a seal face in opposing relationship to the mating ring seal face to define a seal interface. The mating ring seal face or the primary ring seal face defines an annular axially recessed section and a dam section. The recessed section is axially disposed further from the cooperating seal face relative to the dam section. The axially recessed section further includes a face pattern axially spaced further from the dam section than the recessed portion and is capable of generating a hydrodynamic force between the mating ring seal face and the primary ring seal face.

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