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 6105-00-066-2311
NSN 5945-00-588-9098
NSN 6650-01-419-0286
NSN 5935-01-263-9914
NSN 5910-01-436-7525
NSN 5998-01-483-6528
NSN 5975-01-212-4306
NSN 5855-00-896-4047
NSN 5985-00-040-0412
NSN 6130-00-734-4627
NSN 5950-00-296-5505
NSN 5996-01-485-0305