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 6105-01-349-3656
NSN 5990-01-476-9956
NSN 6105-01-453-2650
NSN 5990-00-740-0249
NSN 6150-00-696-4295
NSN 6240-01-142-8923
NSN 6645-01-091-9363
NSN 5996-01-434-0922
NSN 6650-00-119-9431
NSN 5996-00-980-6465
NSN 4140-01-147-2164
NSN 5950-00-382-7741