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 7035-01-231-2450
NSN 6130-00-190-4115
NSN 6135-01-620-3874
NSN 5996-01-126-7238
NSN 5975-00-660-6652
NSN 5855-00-925-0114
NSN 5999-01-591-0171
NSN 5985-00-397-7296
NSN 5975-01-157-3111
NSN 6320-01-486-8004
NSN 6150-00-342-9765
NSN 5990-01-370-7912