Squeeze Effects in Radial Face Seals

[+] Author and Article Information
I. Etsion

Department of Mechanical Engineering, Technion, Haifa, Israel

J. of Lubrication Tech 102(2), 145-151 (Apr 01, 1980) (7 pages) doi:10.1115/1.3251452 History: Received May 18, 1978; Online November 17, 2009


Squeeze effects in a liquid lubricated radial face seal are analyzed. The analysis considers face misalignment with both axial and angular vibrations of the primary seal ring. Translational, rotational, and cross-coupled damping coefficients of the fluid film are derived analytically from a solution of the Reynolds equation utilizing the narrow seal approximation. Results are given for a wide range of practical radius ratios. At each radius ratio, the complete range of angular misalignment—from parallel faces to touch down—is covered. It is shown that squeeze effects in face seals are usually larger than the more familiar hydrodynamic effects. These effects play an important role in the seal’s mechanism of operation and therefore have to be considered in any realistic seal model.

Copyright © 1980 by ASME
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