Explosive Decompression of Seals and Polymers

Elastomeric seals are susceptible to damage associated with rapid gas (explosive) decompression events in service where pressurised gas is present. Performance generalizations are difficult because so many variables determine the ED resistance of a given elastomer. Many “ED-resistant” elastomer grades have been developed and are commercially available; however, performance data for these should be treated with caution. For critical service, qualification testing at service conditions is strongly advised. MERL have developed and hold the IPR of an HNBR elastomer compound (BPSCE) for ED resistance.