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 5945-01-071-7647
NSN 5930-01-315-8117
NSN 5935-01-406-2847
NSN 5925-01-165-7053
NSN 5965-00-949-1599
NSN 5985-00-661-2263
NSN 4140-00-513-1089
NSN 5835-00-740-0246
NSN 5855-01-441-1392
NSN 5925-01-248-2202
NSN 6320-01-287-0540
NSN 6150-00-329-5720