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 6610-01-017-7725
NSN 5895-01-432-5096
NSN 5895-00-534-3163
NSN 5998-00-044-4797
NSN 6130-01-305-5971
NSN 5905-01-392-3615
NSN 4140-01-129-2239
NSN 6620-00-581-5325
NSN 5950-01-441-8711
NSN 5975-00-986-6186
NSN 7035-00-626-1958
NSN 5945-00-276-9274