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 6220-00-906-7228
NSN 6650-01-231-9545
NSN 6645-00-295-0625
NSN 5905-01-363-3152
NSN 6320-01-318-6518
NSN 4140-00-493-9638
NSN 5990-00-768-9341
NSN 6620-00-908-2368
NSN 5990-01-501-9094
NSN 6105-01-382-0591
NSN 5945-01-005-1445
NSN 6105-01-440-3426