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 5855-00-466-2309
NSN 6610-00-395-2574
NSN 5965-00-594-3115
NSN 5910-01-374-7661
NSN 5930-01-011-9258
NSN 6645-01-350-3138
NSN 5925-00-777-4083
NSN 6150-01-503-6262
NSN 5930-01-535-9524
NSN 5965-01-268-4034
NSN 5905-01-083-2081
NSN 6685-01-011-2159