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Seal Testing in Aerated Lubricants
Technical Paper
2011-01-1209
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Typical seal immersion testing in lubricants does not aerate the lubricant as typically seen during normal operation of a transmission or axle. This paper will discuss a new test apparatus that introduces air into transmission fluids and gear oils during seal immersion testing. The seal materials selected for the testing are from current vehicle applications from several different material families. The test results compare the standard properties: change in tensile strength, elongation, hardness, and volume swell. Several tests were completed to investigate and refine the new testing method for seal compatibility testing with transmission fluids and gear oils. Initial results from the first data sets indicate that lubricant aeration helps improve test repeatability. In addition to aeration, the test results explore appropriate fluid immersion temperature for repeatability and appropriate test duration.
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Citation
Petit, J., Fewkes, R., and O'Brien, C., "Seal Testing in Aerated Lubricants," SAE Technical Paper 2011-01-1209, 2011, https://doi.org/10.4271/2011-01-1209.Also In
References
- ASTM D 471 STM for Rubber Property-Effect of Fluids
- ASTM D 3182 Standard Practice for Rubber Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
- ASTM D6594 Evaluation of Corrosiveness of Diesel Engine Oil at 135C
- Bauerle, J. Bruhnke, D. “The Effects of Aeration of Test Fluids on the Rentention of Physical Properties of Fluoroelastomer Vulcanizates,” SAE Technical Paper 890362 1989 10.4271/890362