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 5855-01-446-1936
NSN 5935-00-931-0985
NSN 5935-01-301-6370
NSN 5920-01-590-0493
NSN 6150-00-583-9878
NSN 6645-01-535-2847
NSN 6105-01-104-5214
NSN 6685-01-569-8896
NSN 5965-01-612-3522
NSN 5990-01-432-4249
NSN 5996-01-258-5327
NSN 5990-00-920-2894