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 5910-01-391-9718
NSN 6620-01-507-8444
NSN 6135-01-588-4160
NSN 5920-01-509-4780
NSN 5935-00-610-1901
NSN 5895-01-629-4961
NSN 5965-00-089-7873
NSN 5835-01-078-6126
NSN 6110-01-546-5645
NSN 6240-01-296-8997
NSN 5998-01-192-7950
NSN 5998-01-460-6587