We perform the swell test by ASTM D471 to measure the effects of oils, greases, fuels, and other liquids on rubber parts such as seals, gaskets, and hoses. Rubber parts such as seals, gaskets, and hoses may be exposed to oils, greases, fuels, and other fluids during service. The exposure may be continuous or intermittent and may occur over wide temperature ranges. This exposure can cause deterioration to the rubber, affecting the performance and possibly causing partial failure of the rubber parts.
This test simulates service conditions through controlled accelerated testing, but may not give any direct correlation with actual part performance, because service conditions vary too widely. It yields comparative data on which to base judgment as to expected service quality. This test method is suitable for specification compliance testing, quality control, referee purposes, and research and development work.
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