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|| Title &
|Engine Coolant Testing
ASTM STP 1335
Serviceability of Elastomers
in Modern Engine Coolants
Hertz, D.L. Jr., Farinella,
A.C., and Bussem, H.
Seals Eastern, Inc.
The aging of elastomers in engine
coolants after extended periods of service can be both a physical
process (stress / strain relaxation) and/or a chemical change.
Engine coolants are essentially aqueous and non-aqueous
electrolytes coupled with inorganic inhibitor systems, as well as
new organic systems. The long-term effects of this environment are
reviewed. Chemical and functional tests are utilized to model
these aging processes. This review will offer a better
understanding of the long-term suitability of typical candidate
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