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 6110-01-627-7107
NSN 5925-00-081-9135
NSN 5905-00-905-4150
NSN 6150-01-295-5951
NSN 6320-01-512-2031
NSN 5990-00-062-5797
NSN 5945-00-431-8481
NSN 5930-01-494-3481
NSN 7035-01-024-9511
NSN 5945-01-549-2807
NSN 6150-01-598-6081
NSN 5930-01-431-7016