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 6105-00-881-0650
NSN 5835-01-388-5198
NSN 6220-00-446-1623
NSN 6610-01-287-9814
NSN 5925-01-177-4636
NSN 5905-00-723-2357
NSN 5895-01-260-7881
NSN 5999-01-259-7826
NSN 6105-01-044-5405
NSN 5910-01-034-8936
NSN 5855-01-612-8748
NSN 6110-01-461-0604