Details
| Original language | English |
|---|---|
| Pages (from-to) | 557-565 |
| Number of pages | 9 |
| Journal | Industrial Lubrication and Tribology |
| Volume | 72 |
| Issue number | 5 |
| Publication status | Published - 22 Jul 2019 |
Abstract
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.
Keywords
- Additives, Compatibility test, FKM seals, Synthetic oil
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Energy(all)
- General Energy
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Industrial Lubrication and Tribology, Vol. 72, No. 5, 22.07.2019, p. 557-565.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Lubricant compatibility of FKM seals in synthetic oils
AU - Bulut, Dilek
AU - Krups, Tatjana
AU - Poll, Gerhard
AU - Giese, Ulrich
N1 - Funding information: This research was funded by the Arbeitsgemeinschaft industrieller Forschungsvereigungen “Otto von Guericke” e.V. under the grant IGF 18053 N.
PY - 2019/7/22
Y1 - 2019/7/22
N2 - 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.
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.
KW - Additives
KW - Compatibility test
KW - FKM seals
KW - Synthetic oil
UR - http://www.scopus.com/inward/record.url?scp=85069543914&partnerID=8YFLogxK
U2 - 10.1108/ILT-02-2019-0065
DO - 10.1108/ILT-02-2019-0065
M3 - Article
AN - SCOPUS:85069543914
VL - 72
SP - 557
EP - 565
JO - Industrial Lubrication and Tribology
JF - Industrial Lubrication and Tribology
SN - 0036-8792
IS - 5
ER -