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 5910-01-290-7720
NSN 6320-01-476-7702
NSN 5935-01-026-0965
NSN 5835-01-412-0344
NSN 5935-00-517-9414
NSN 6105-00-485-5939
NSN 5990-00-960-6310
NSN 6145-00-010-1425
NSN 5930-00-352-5617
NSN 5910-01-397-8532
NSN 5910-01-435-2685
NSN 5930-01-069-2031