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 6240-00-660-8849
NSN 6145-01-134-4332
NSN 6645-01-074-4063
NSN 6620-01-383-7519
NSN 5910-00-078-9545
NSN 5910-01-376-6841
NSN 6240-00-983-4583
NSN 6130-01-322-2797
NSN 6650-01-207-0829
NSN 6135-01-398-5922
NSN 5999-00-119-0861
NSN 5930-01-118-9717