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 6145-00-789-3705
NSN 5930-01-321-7444
NSN 2925-01-408-6205
NSN 5960-00-644-4982
NSN 6610-00-435-8370
NSN 5990-00-326-2172
NSN 5920-00-391-6252
NSN 5925-01-017-1036
NSN 6650-00-601-8944
NSN 6620-00-105-3312
NSN 6320-01-358-8069
NSN 5999-01-581-8135