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 5935-00-850-3505
NSN 6135-01-508-6083
NSN 5910-01-482-8782
NSN 6130-00-901-5595
NSN 5935-01-101-5595
NSN 5910-00-145-5754
NSN 5999-00-316-3169
NSN 6685-01-163-8833
NSN 5960-01-604-1158
NSN 5915-01-350-2407
NSN 5930-01-287-9083
NSN 5996-01-116-4670