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 5999-00-242-0529
NSN 5920-01-283-7042
NSN 6135-00-951-3426
NSN 6240-01-206-4809
NSN 6110-00-518-2998
NSN 5985-01-288-7595
NSN 5935-01-655-8080
NSN 5915-00-607-9587
NSN 5999-00-446-9111
NSN 5935-00-469-3543
NSN 5920-01-047-4682
NSN 5975-00-702-5287