Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1993-05-03
1995-04-04
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 27, 277173, 277201, F16J 1548
Patent
active
054030196
ABSTRACT:
A free floating labyrinth ring seal is sized to fit within a cavity to seal against a rotatable shaft to control excessive leakage of gas between high and low pressure chambers such as in a turbo machine. The seal is comprised of an elastomeric ring-shaped body with spaced opposing high and low pressure walls and a labyrinth seal surface extending therebetween for sealing with the shaft. The Walls have portions defining opposing surfaces of unequal area for pressure-balancing against each other within the cavity with a controlled gas flow clearance between the seal body and the walls of the cavity so that the seal body is substantially free to float with vibration of the shaft while maintaining close tolerance sealing between the labyrinth surface and the shaft as the latter rotates.
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Beres John L.
Cuchlinski Jr. William A.
Dresser-Rand Company
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