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 6150-01-429-8315
NSN 5910-01-199-2676
NSN 6105-01-308-8426
NSN 6135-00-967-3112
NSN 5985-01-623-7709
NSN 5996-01-521-0367
NSN 5935-01-568-1848
NSN 6135-01-380-0059
NSN 6240-01-541-9298
NSN 5835-01-123-8305
NSN 6150-01-010-3274
NSN 6620-01-198-4468