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 5975-01-328-1503
NSN 7035-00-553-6951
NSN 6135-00-961-3603
NSN 5999-01-645-8412
NSN 6145-01-061-3058
NSN 5965-00-581-0981
NSN 5965-01-341-8746
NSN 6145-00-601-9655
NSN 5920-01-026-7727
NSN 7035-00-104-7613
NSN 7035-00-570-4100
NSN 4140-01-429-9060