A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5855-00-132-4898
NSN 6610-00-219-4150
NSN 6150-00-832-5164
NSN 5996-00-146-9746
NSN 2925-01-239-6044
NSN 5920-00-788-2322
NSN 5930-01-023-8931
NSN 6685-00-504-1911
NSN 5985-01-291-6073
NSN 5990-00-199-0081
NSN 5895-00-952-3490
NSN 5935-01-451-3776