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 5998-01-196-3538
NSN 5930-01-150-1605
NSN 6320-01-544-6447
NSN 5985-01-084-0077
NSN 6320-01-466-4175
NSN 6110-00-633-5253
NSN 5835-00-148-9719
NSN 5910-01-445-0030
NSN 4140-00-125-0837
NSN 5920-00-915-9731
NSN 5910-00-946-8263
NSN 6105-01-429-6853