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 6240-00-357-7976
NSN 6320-00-336-9123
NSN 6645-00-711-5381
NSN 5925-01-596-2796
NSN 6650-00-336-4828
NSN 5920-01-014-8195
NSN 5895-00-768-0942
NSN 6150-00-741-6128
NSN 5930-01-197-0251
NSN 5960-01-317-3800
NSN 6145-01-050-7531
NSN 5999-00-281-3900