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 5965-00-686-7067
NSN 5930-01-335-3158
NSN 5960-00-258-9292
NSN 5910-00-517-9754
NSN 5960-00-728-3459
NSN 6650-01-320-1169
NSN 5999-00-959-4415
NSN 6650-01-067-7812
NSN 6150-01-290-3127
NSN 6610-01-633-8931
NSN 5990-00-296-4825
NSN 6610-01-584-4425