Explosive Decompression

Failure Pattern: Marked by random short splits or ruptures going deep into the O-ring's cross section. When the O-ring is first removed, the surface may also be covered with small blisters.

Problem Sources: Absorption of gas by O-ring while operating in high pressure conditions. Subsequent rapid decrease in system pressure traps gas within the O-ring's micropores, causing surface blisters and ruptures as the gas escapes.

Suggested Solutions: Increase time for decompression... Increase material hardness to 80-95 durometer range... Reduce O-ring cross sectional size... Specify a decompression resistant material, such as Nitrile.