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Viton
O-rings Seals
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O-rings Seals
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Elastomers Mechanical
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Outgassing and Weight Loss of Elastomers
Weight loss measurements are often used as an indicator of outgassing in elastomers. Specific values for vacuum weight loss are dependent on the elastomer and sample conditioning. Heating an o-ring seal for several hours at 100°C has been shown to reduce outgassing significantly. This "bake-out" procedure is less important for seals made from modern fluorocarbon and perfluorocarbon elastomers as the manufacturing process includes a several-hour post-curing step at temperatures above 200°C. Vacuum baking can provide even less outgassing. Outgassing Rates of Elastomers and Various Materials
* Leybold
Inficon, Inc.-"Vacuum" 1997 Next Topic Trapped Gas in O-Rings and Seals
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