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 6240-00-395-0019
NSN 6150-01-067-9145
NSN 5835-01-078-3675
NSN 5985-01-575-1397
NSN 5895-01-436-3367
NSN 5935-01-634-0668
NSN 5910-01-589-7177
NSN 5930-01-250-3117
NSN 5855-01-426-3471
NSN 6320-00-546-9249
NSN 5910-00-161-1117
NSN 5895-01-549-0765