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 6105-01-121-4610
NSN 5910-00-206-3224
NSN 6130-00-592-5800
NSN 6685-01-599-3161
NSN 5910-00-658-0674
NSN 6145-01-459-8040
NSN 6145-00-825-7316
NSN 5965-01-640-9691
NSN 5990-01-623-0082
NSN 6320-00-583-3104
NSN 6610-00-673-1258
NSN 6130-01-501-7152