This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluating the Effect of Fluids on Automatic Transmission Piston Seal Materials
Annotation ability available
Sector:
Language:
English
Abstract
A brief review of the testing of automatic transmission fluid for compatibility with seals is presented. The total immersion test used in fluid qualification, while apparently effective in predicting the compatibility of fluids and seals in service, does not correlate well with transmission tests with respect to hardness change of piston seals. The Dip-Cycle Test, developed to overcome this limitation, is a procedure for alternately immersing seal specimens in the test fluid and suspending them in the hot air-fluid vapor atmosphere above the fluid. Correlation of the Dip-Cycle Test with transmission piston seal results is much improved over that with the total immersion test.
It is the purpose of this paper to review these developments and to present an improved test procedure (dip cycle test) for evaluating the effect of fluids on transmission piston seal materials.
Authors
Topic
Citation
Peters, G., Anderson, R., and Hunstad, N., "Evaluating the Effect of Fluids on Automatic Transmission Piston Seal Materials," SAE Technical Paper 620231, 1962, https://doi.org/10.4271/620231.Also In
References
- Hunstad N. A. Selby T. W. Osborne R. E. “The Present Status of Automatic Transmission Fluid, Type A.” Presented at the SAE Summer Meeting Chalfonte-Haddon Hall Atlantic City, N.J. June 3 8 1956
- Bower E. S. Vandermar B. C. “Reciprocating and Static Seal Designs of Elastomeric Compounds” SAE Annual Meeting Detroit, Michigan January 8 12 1962
- Haviland M. L. Rodgers J. J. “Friction Characteristics of Automatic Transmission Fluids as Related to Transmission Operation.” Presented at the 15th ASLE Annual Meeting Cincinnati, Ohio April 1960