In the previous part of this series we examined which was the best O-ring material for use in high temperature applications (over 150°C). Today, we will explore what is the best low temperature O-ring according to several working demands. For the most part, many compounds already support a sub degree service temperature ranging from -5 to -25°C, for this reason we will only examine low temperature applications under -25°C.
For working conditions below -25°C, you may wish to consider the following materials; NBR LT, HNBR LT, VMQ, FVMQ, Kalrez® 0040, Polymax P045B7LT, FEP Encapsulated O-rings and Astra seals.
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