TY  - JOUR
AB  - Purpose Elastomer seals are used in many applications. They are exposed to lubricants and additives at elevated temperatures, as well as mechanical stresses. They can only provide good sealing function when they have resistance to those factors. There are many elastomer-lubricant compatibility tests based on DIN ISO 1817 in industry. However, they are insufficient and costly. Correlations between the tests and the applications are inadequate. The purpose of this study is investigating lubricant compatibility of fluoroelastomers (FKM) seals in polyethylene-glycol (PG)- and polyalphaolefin (PAO)- based synthetic oils and developing a methodology to predict seal service life.Design/methodology/approach A new compatibility test which is more sufficient in terms of time and cost was developed and compared with a standard test, currently used in industry. Compatibility of FKM radial lip seals with PG- and PAO-based synthetic oils with different additives was investigated chemically and dynamically. Failure mechanisms were examined.Findings The new method and the Freudenberg Flender Test FB 73 11 008 showed similar results concerning damages and similar tendencies regarding wear. The additive imidazole derivative was the most critical. Static tests give indications of possible chemically active additives, but alone they are insufficient to simulate the dynamic applications.Originality/value The paper describes a new method to investigate elastomer-lubricant compatibility and gives first results with a variety of lubricants.
VL  - 72
IS  - 5
SN  - 0036-8792
DO  - 10.1108/ILT-02-2019-0065
UR  - https://doi.org/10.1108/ILT-02-2019-0065
AU  - Bulut Dilek
AU  - Krups Tatjana
AU  - Poll Gerhard
AU  - Giese Ulrich
PY  - 2019
Y1  - 2019/01/01
TI  - Lubricant compatibility of FKM seals in synthetic oils
T2  - Industrial Lubrication and Tribology
PB  - Emerald Publishing Limited
SP  - 557
EP  - 565
Y2  - 2024/04/25
ER  -