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 6240-01-292-5071
NSN 5950-01-485-7368
NSN 5930-01-169-6346
NSN 5895-00-089-4522
NSN 5990-01-533-1347
NSN 6220-01-224-6415
NSN 5950-00-626-8273
NSN 6645-01-424-4667
NSN 6650-01-260-1762
NSN 5935-01-400-5949
NSN 5905-01-311-9901
NSN 5895-01-442-7011