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Influence of dynamic eccentricity on the pumping rate of rotary shaft seals at sub-zero temperatures

, , and . (12.-13. Oktober 2022)728 (peer-review).
DOI: 10.61319/9RN24IDM

Abstract

In this paper, the influence of dynamic eccentricity and low operating temperatures on the pumping rate of elastomeric rotary shaft seals is analysed experimentally. For this purpose, function tests and pumping rate measurements were carried out at different dynamic eccentricities up to 0.3 mm (0.6 mm TIR) and oil sump temperatures between +40 and -20 °C with rotary shaft seals made of nitrile rubber (NBR) and fluoro rubber (FKM) in combination with synthetic polyalphaolefin oil FVA PAO1. The function tests and the pumping rate measurements show the application limits of the rotary shaft seals under the combination of dynamic eccentricity and low oil sump temperature

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