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 2925-00-737-6476
NSN 6240-00-891-8586
NSN 5960-01-495-0859
NSN 5930-01-370-3516
NSN 5930-01-435-6314
NSN 5999-01-287-6257
NSN 5945-00-069-3133
NSN 6110-01-350-2533
NSN 5910-01-580-3716
NSN 5935-00-143-8275
NSN 6240-01-510-9299
NSN 5925-01-359-5823