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Use of Ethylene Propylene Rubber for Sealing Petroleum Fluids in Diesel Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1982 by SAE International in United States
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Most elastomer selection charts and application literature relating to elastomer usage recommend that ethylene propylene (EP) not be used in contact with petroleum fluids. However, when properly applied, EP rubber will successfully seal petroleum fluids in many diesel engine applications. The reason for this discrepancy is that industry generally equates“fluid resistance” (which really should be “resistance to swelling in fluid”) to resistance to deterioration in fluid. An elastomer may be swelled by a fluid, and not be chemically deteriorated by that fluid, and conversely an elastomer may not be swelled by a fluid but be degraded by that fluid. This confusion could be eliminated if both fluid swelling and fluid degradation information were clearly reported.
Successful applications of EP for static seals are described, design considerations are discussed, and a swell pressure measurement device is described.
CitationHercamp, R., "Use of Ethylene Propylene Rubber for Sealing Petroleum Fluids in Diesel Engines," SAE Technical Paper 820143, 1982, https://doi.org/10.4271/820143.
- Meier Charles David Olvey, Shelby Lewis Assigned to Cummins Engine Company U.S. Patent 4,095,803 1978
- Christie, G. Gair, T. J. Hercamp, R. D. “Silicone Rubber Oil Seals for Diesel Engines,” SAE Paper 760352 1976 5
- Nersasian, Arthur “Effects of“Sour” Gasoline on Rubber Hose,” Rubber and Plastic News 1978
- Gupta, A. S. TM 93-594, Internal Unpublished Report 1975
- 1981 Annual Book of ASTM Standards 38 320
- Ibid 321