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 5996-01-628-8624
NSN 6110-01-206-4779
NSN 5920-01-099-0963
NSN 5990-01-108-7785
NSN 5935-01-432-1685
NSN 5905-01-618-6611
NSN 6150-01-289-5268
NSN 5920-00-836-6983
NSN 6320-01-571-8974
NSN 5910-01-633-9963
NSN 7035-01-184-8905
NSN 6150-01-122-3647