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 6320-01-431-4359
NSN 6650-01-237-4689
NSN 6110-01-270-6522
NSN 6685-00-219-3956
NSN 6220-00-935-6881
NSN 6240-00-477-3027
NSN 5915-00-516-9987
NSN 6320-01-118-6662
NSN 5975-01-156-9498
NSN 6685-01-535-6466
NSN 6650-01-028-1304
NSN 2925-01-197-7864