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 5960-00-506-1295
NSN 5895-01-565-3816
NSN 2925-00-468-5273
NSN 5965-01-387-3875
NSN 5996-01-238-7973
NSN 6320-01-415-0953
NSN 7035-01-438-2108
NSN 5910-01-037-0766
NSN 5925-01-596-2796
NSN 5985-00-341-6249
NSN 6145-01-504-7128
NSN 5925-00-175-6612