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 5960-01-122-7310
NSN 5910-01-446-5870
NSN 5935-00-243-2048
NSN 6135-00-862-5736
NSN 5920-00-369-0923
NSN 6135-00-016-0071
NSN 6220-01-457-8996
NSN 5945-00-730-3533
NSN 6105-00-575-9720
NSN 6650-00-883-4790
NSN 5835-01-463-2334
NSN 5945-00-302-6933