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 6150-00-681-8497
NSN 5960-00-462-7145
NSN 5915-00-392-7640
NSN 5910-00-605-9659
NSN 5975-01-391-3477
NSN 6610-01-098-8363
NSN 5930-00-243-9399
NSN 6130-01-005-4263
NSN 6110-00-974-2046
NSN 6610-01-371-5039
NSN 6620-00-542-1579
NSN 5996-00-553-7348