Synonyms
Definition
Rotary shaft lip seals are widely used for the retention or exclusion of fluids on rotating shafts across many applications. The dynamic sealing is achieved by a narrow edge, or lip, of elastomer or plastic in contact with a rotating shaft. The lip is supported by a flexible element that is held in place by a rigid casing that also forms the static seal.
Scientific Fundamentals
Development was largely empirical for some 50 years or more until mathematical analysis of the seals gave a more established basis for understanding the detail of how these seals operate. The current theory of rotary shaft lip seals is discussed in Salant (2010).
The types of seals in common use can be divided into three broad categories:
Elastomer lip seals, which are used for sealing of shafts against exit or ingress of liquids.
Plastic, primarily filled PTFE, which are used as an alternative to elastomer seals where fluid resistance or lack of...
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B.R. Sedlar, D.M. Toth, R.M. Noteboom, Dynamic shaft seal and method of installation thereof, World Patent: WO/2008/112610, 2008
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© 2013 Springer Science+Business Media New York
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Flitney, R.K. (2013). Rotary Shaft Lip Seals. In: Wang, Q.J., Chung, YW. (eds) Encyclopedia of Tribology. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-92897-5_127
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DOI: https://doi.org/10.1007/978-0-387-92897-5_127
Publisher Name: Springer, Boston, MA
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