Low temperature sealing capability of elastomer O-rings

Abstract

The claims from different suppliers of elastomer seals for the low temperature performance of materials may be based on different test criteria which will vary in accuracy when it comes to predicting performance in the field. This feature provides a critique of current practice regarding substantiating claims for minimum operating temperatures of O-rings. It discusses the relationship between values quoted, test methods and actual sealing performance together with an overview of the influence of polymer chemistry and compounding techniques.