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Evaluating leakage from radial lip seals affected by bearing area of shaft topography

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conference contribution
posted on 2019-03-11, 11:23 authored by Emilia Kozuch, Petros Nomikos, Ramin RahmaniRamin Rahmani, Nick MorrisNick Morris, Homer Rahnejat
This paper investigates the influence of shaft surface topography upon seal leakage, when using different surface finishing and manufacturing techniques. A hydrodynamic model is used to determine the generated pressure distribution within the seal-shaft contact. Pertinent statistical parameters are selected to distinguish between the various shaft surface topographies, which can contribute to an effectively sealed conjunction. Results obtained from the hydrodynamic model shows the creation of multiple cavitated regions caused by the deep valleys. This leads to thinner film thickness on the surface plateau and therefore lower predicted leakage rates. The distribution of peaks and valleys is shown to be a factor in differentiating contact performance.


The authors are grateful to the Engineering and Physical Science Research Council (EPSRC) for the financial support extended to this research through the Doctoral Training Program (DTP) scheme



  • Mechanical, Electrical and Manufacturing Engineering

Published in

20th ISC – International Sealing Conference Stuttgart 2018


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KOZUCH, E. ... et al., 2018. Evaluating leakage from radial lip seals affected by bearing area of shaft topography. Presented at the 20th ISC – International Sealing Conference Stuttgart 2018: Sealing Technology – Beyond Limitations, University of Stuttgart, October 10-11.


AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

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This is a conference paper.




University of Stuttgart