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 5935-00-117-4700
NSN 5975-01-392-0436
NSN 6130-01-534-6185
NSN 6130-01-301-4837
NSN 5945-00-108-7048
NSN 5945-01-395-9886
NSN 7035-01-211-5636
NSN 5930-01-459-1963
NSN 5920-01-381-2597
NSN 2925-01-437-9041
NSN 6130-00-408-5055
NSN 7035-01-599-1694