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 7035-00-188-6674
NSN 6610-01-445-5274
NSN 5920-01-547-0278
NSN 6220-00-822-4426
NSN 5999-00-277-4257
NSN 6105-01-573-9515
NSN 6105-01-146-1391
NSN 6220-00-827-0227
NSN 6145-01-536-9899
NSN 6135-01-508-3784
NSN 5999-01-530-7992
NSN 5855-01-068-3683