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Evaluating the Effect of Fluids on Automatic Transmission Rotating Shaft Seal Elastomers
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
The Total Immersion Test (ASTM D 471) for seal elastomers, used in evaluating the compatibility of fluids and seals for automatic transmissions, does not, produce hardness and volume change results similar to those found for rotating shaft seals in service.
The Tip Cycle Test was devised to provide better agreement with service results. In the test, one side of the seal is exposed to air, and the other alternately to fluid and to air-fluid vapor.
Rotating shaft seals were evaluated in both car and dynamometer transmission tests, and in various bench tests. Agreement was poor between transmission tests and both the Total Immersion and the Dip Cycle Tests. Good agreement was found with the Tip Cycle Test.
Authors
Citation
Peters, G. and Rodgers, J., "Evaluating the Effect of Fluids on Automatic Transmission Rotating Shaft Seal Elastomers," SAE Technical Paper 660396, 1966, https://doi.org/10.4271/660396.Also In
References
- General Motors Passenger Car Automatic Transmission Bulletin Second Edition 1964
- Hunstad, N. A. Selby, T. W. Osborne, R. E. “The Present Status of Automatic Transmission Fluid, Type A,” Paper presented at SAE Summer Meeting Atlantic City, N. J. June 3–8 1956
- Peters, G. A. Anderson, R. L. Hunstad, N. A. “Evaluating the Effect of Fluids on Automatic Transmission Piston Seal Materials.” Paper presented at SAE Summer Meeting Atlantic City, N. J. June 11–15 1962
- Haviland M. L. Rodgers, J. J. “Friction Characteristics of Automatic Transmission Fluids as Related to Transmission Operation,” Lubrication Engineering Vol. 17 No. 3 March 1961