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 6220-00-016-5397
NSN 6620-00-075-6667
NSN 5935-00-266-8506
NSN 5965-01-145-3732
NSN 6220-01-593-0061
NSN 6240-01-337-2509
NSN 6130-01-259-1615
NSN 5895-01-113-7725
NSN 5895-01-338-8007
NSN 6220-01-057-1133
NSN 6135-00-203-9645
NSN 6150-01-020-8983