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 5985-00-573-9876
NSN 6150-00-491-4028
NSN 5905-00-850-5107
NSN 5905-01-172-2438
NSN 5965-00-843-9957
NSN 5990-00-226-1152
NSN 5990-01-376-4376
NSN 5910-00-950-9030
NSN 5950-01-563-7259
NSN 6320-01-512-2031
NSN 5925-01-516-2823
NSN 5985-00-419-7565