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 6110-00-248-2942
NSN 6620-00-932-4306
NSN 6620-00-361-3590
NSN 6685-01-359-9166
NSN 6135-01-370-2599
NSN 5998-01-621-1939
NSN 6610-01-525-7266
NSN 2925-01-331-5039
NSN 5999-00-451-0530
NSN 6685-00-353-7893
NSN 5935-00-463-5119
NSN 6650-01-154-1870