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 5895-01-297-8008
NSN 5925-01-397-4991
NSN 6320-01-177-3192
NSN 5920-01-088-8312
NSN 5935-01-317-7847
NSN 6130-01-371-5048
NSN 5930-00-926-3103
NSN 7035-01-517-1713
NSN 5998-01-429-6760
NSN 5905-00-115-7275
NSN 5945-00-986-7569
NSN 6650-01-169-6367