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 6150-00-081-2063
NSN 6610-00-534-4758
NSN 5910-01-062-0518
NSN 5930-01-368-5536
NSN 6110-01-154-2229
NSN 5999-01-048-1326
NSN 5999-01-212-5432
NSN 5985-00-877-3103
NSN 5925-01-044-5508
NSN 4140-00-175-6036
NSN 6150-01-110-5278
NSN 6105-01-557-0140