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 6650-00-356-8405
NSN 5960-00-185-9974
NSN 5965-00-161-3954
NSN 6110-01-343-4538
NSN 7035-01-633-9537
NSN 5960-01-258-5615
NSN 6150-00-460-2938
NSN 6240-01-157-9128
NSN 6320-01-364-1840
NSN 5999-01-195-8648
NSN 6135-01-274-3546
NSN 5960-00-553-7338