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Correlation between Wetting Properties and the Susceptibility to Wear of Rotary Shaft Sealing Systems

, , and . (12.-13. Oktober 2022)731 (peer-review).
DOI: 10.61319/GU93XB2N

Abstract

Modern lubricants (e.g. polyglycols, esters) cause problems when sealed with rotary shaft seals. The wear of rotary shaft seals strongly depends on the wetting properties of the respective friction partners. The paper shows, how the susceptibility to wear of rotary shaft sealing systems can be estimated by a combined consideration of the wetting properties of the sealing components, the lubricants viscosity and the pumping rate of the sealing system. Investigations were carried out using polished steel counter faces made from eight different alloys, together with FKM rotary shaft seals and eleven chemically different lubricants (mineral oils, polyglycols, poly-α-olefins, esters and silicone oils).

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