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 7035-00-529-3128
NSN 6685-01-471-6484
NSN 5895-01-467-9139
NSN 5998-00-936-7002
NSN 5930-01-258-4817
NSN 6650-01-379-6645
NSN 6650-00-815-1579
NSN 6650-01-264-3045
NSN 6650-01-560-2861
NSN 5895-00-491-9506
NSN 5935-01-447-0622
NSN 5915-01-523-1669