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 6320-01-449-0043
NSN 4140-00-248-6089
NSN 6610-00-085-4436
NSN 5945-01-596-6410
NSN 5910-01-535-0997
NSN 5910-00-915-3623
NSN 6320-00-905-0543
NSN 5935-01-333-9579
NSN 6135-01-433-2062
NSN 6130-00-959-5800
NSN 6110-01-493-6564
NSN 6130-01-591-7142