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 6150-00-988-0617
NSN 6135-00-990-1822
NSN 7035-00-215-3272
NSN 5999-01-278-9377
NSN 6240-01-539-3757
NSN 4140-01-400-3610
NSN 6320-00-681-1324
NSN 6150-01-362-7319
NSN 5895-00-730-9774
NSN 6150-01-170-1109
NSN 6105-01-193-2054
NSN 5910-01-644-6442