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 7035-00-997-6212
NSN 5915-01-100-4105
NSN 5975-01-254-1684
NSN 6650-00-170-5095
NSN 5965-01-241-9865
NSN 7035-00-096-9986
NSN 6650-01-542-0683
NSN 4140-01-256-9053
NSN 6240-00-968-1413
NSN 6135-00-112-8637
NSN 7035-00-919-3381
NSN 5990-00-990-8940