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 6610-01-391-9355
NSN 6105-00-111-0851
NSN 5925-00-872-1480
NSN 6135-01-463-2445
NSN 5998-01-574-0053
NSN 6610-01-445-1036
NSN 5996-01-492-0390
NSN 6645-01-192-2684
NSN 5960-00-544-6227
NSN 5996-01-379-9547
NSN 6130-01-105-9129
NSN 5999-00-406-1941