Evaluation of Wear Ring Seals for High-Speed, High-Pressure Turbopumps

[+] Author and Article Information
F. R. Mallaire, L. H. Nelson, P. S. Buckmann

Aerojet-General Corporation, Sacramento, Calif.

J. of Lubrication Tech 91(3), 438-448 (Jul 01, 1969) (11 pages) doi:10.1115/1.3554957 History: Received August 06, 1968; Online August 23, 2011


This paper describes a seal evaluation program for application as pump impeller wear rings for high-pressure, high-speed liquid rocket turbopumps. The principal design requirements were to control the leakage to values consistent with efficiency requirements and to eliminate potential explosions resulting from high velocity rubbing at the required clearances. Two approaches were taken: the first allowed rubbing of rotating labyrinth teeth on stationary, soft compatible inserts; the second utilized hydrostatic seals which maintained a fluid film between the stationary seal and the rotating wear ring.

Copyright © 1969 by ASME
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