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 6105-00-403-7526
NSN 5996-00-150-2289
NSN 5945-01-350-1851
NSN 5895-00-118-3152
NSN 6320-01-491-0327
NSN 4140-00-872-4897
NSN 6240-01-003-8666
NSN 5945-01-593-8801
NSN 6145-01-393-5387
NSN 5965-00-067-6780
NSN 5999-00-685-9957
NSN 5945-00-776-1596