Inproceedings,

HOW DIFFERENT LUBRICANTS EFFECT THE WEAR OF RADIAL LIP SEALING SYSTEMS

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Proceedings M2D2022, page 1019-1030. (2022)711 (peer-review).

Abstract

Modern lubricants (e.g. polyglycols, esters) cause problems when sealed with radial lip seals. The wear of radial lip seals strongly depends on the wetting properties of the respective friction partners. The paper shows, how these wetting characteristics correlate to the wear measured on both, the radial lip seal and the shaft countersurface. Investigations were carried out using polished 100Cr6 steel counter faces and FKM radial lip seals, together with ten chemically different lubricants (two mineral oils, four polyglycols, two poly-α-olefins, one ester and one silicone oil). The results show why some radial lip sealing systems are able to maintain their function over the expected service life and others fail prematurely.

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