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 6130-01-153-2265
NSN 5855-01-616-2721
NSN 5910-01-099-9522
NSN 5920-01-349-0012
NSN 5960-01-493-3948
NSN 6320-01-536-3077
NSN 5999-01-304-2229
NSN 5835-01-257-0154
NSN 5990-01-013-8464
NSN 6220-01-630-8257
NSN 5835-01-359-2575
NSN 4140-00-528-2921