Analysis and Design of a Gas-Lubricated, Sectored, Floating Ring Seal

[+] Author and Article Information
W. Shapiro, C. Lee, H. Jones

Mechanical Technology Incorporated, Latham, N.Y. 12110

J. Tribol 110(3), 525-531 (Jul 01, 1988) (7 pages) doi:10.1115/1.3261666 History: Received March 31, 1987; Online October 29, 2009


Helium buffered floating-ring seals used in cryogenic turbopumps are sujbect to large temperature variations, shaft centrifugal growth, and dynamic shaft excursions. To prevent dangerous contact friction over a wide range of operating conditions generally requires liberal clearances with consequent high leakage. Reduction of helium consumption translates into lower space vehicle helium storage requirements and thus increased payload. A hydrostatic sectored floating-ring seal is described with self-adjusting clearance capabilities that enables the seal to operate with small clearances over the operating range to minimize leakage.

Copyright © 1988 by ASME
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