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 6220-00-098-4927
NSN 6130-01-161-0764
NSN 5960-00-020-5196
NSN 5998-01-157-9264
NSN 6610-01-044-4740
NSN 5935-00-189-3176
NSN 5920-01-503-0883
NSN 7035-00-731-8729
NSN 5950-00-269-4805
NSN 5945-00-170-8645
NSN 5935-01-462-7619
NSN 6145-01-423-9430