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 6145-00-064-0072
NSN 7035-00-585-2113
NSN 6150-01-634-0575
NSN 5950-00-162-2036
NSN 5920-01-255-8851
NSN 6650-00-912-4229
NSN 6685-01-643-5980
NSN 6240-01-429-9826
NSN 6220-01-173-3177
NSN 5930-01-391-6284
NSN 5895-01-505-3994
NSN 5935-01-465-9057