Finely Striated Lip-Seal Surfaces: Part 1—General Effects

[+] Author and Article Information
K. To̸nder

Division of Machine Design, The Norwegian Institute of Technology, University of Trondheim, Trondheim, Norway

J. Tribol 115(4), 620-624 (Oct 01, 1993) (5 pages) doi:10.1115/1.2921685 History: Received February 24, 1993; Revised May 24, 1993; Online June 05, 2008


The work presented previously by To̸nder and Salant (1992) is extended and generalized. In that work it was shown that the fine, axially oriented striations found on some lip-seals, under certain conditions, could lead to the total suppression of leakage through a fully lubricated seal. In the present work the behavior of the lubricant annulus is studied, as are the conditions required for leakage suppression. If the latter are met, it is shown that when a certain parameter—here called the seal number—is increased, the lubricant annulus width will shrink. This will lead to a reduction of the friction force. It is further shown that the striated roughness will also generate a radial force or load capacity. This effect does not involve local cavitation.

Copyright © 1993 by The American Society of Mechanical Engineers
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