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 6320-01-064-0372
NSN 5985-00-896-3091
NSN 5950-01-022-3145
NSN 6240-00-103-0058
NSN 6150-01-658-0748
NSN 5925-01-244-0480
NSN 5910-01-267-7814
NSN 2925-00-156-0999
NSN 6135-01-610-7335
NSN 6145-01-495-5866
NSN 6610-00-263-3076
NSN 5930-01-180-9372