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 6650-01-555-8349
NSN 5985-00-878-4564
NSN 5945-01-077-7943
NSN 5930-01-204-8552
NSN 6130-01-556-7996
NSN 5855-01-068-3683
NSN 6150-00-521-4522
NSN 5855-00-149-0766
NSN 6135-01-355-8917
NSN 5905-01-106-7491
NSN 5996-00-594-0537
NSN 5935-01-378-7729