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 5930-01-067-7930
NSN 5920-00-263-2192
NSN 5935-01-282-4966
NSN 6240-01-395-8300
NSN 5920-01-216-6128
NSN 5905-01-283-2911
NSN 5835-00-498-8189
NSN 5950-01-013-2486
NSN 5905-00-222-4322
NSN 5996-01-182-1125
NSN 5835-01-645-2892
NSN 6150-01-141-6604