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 5930-01-605-1263
NSN 6105-01-441-6732
NSN 5965-01-204-8505
NSN 5996-01-317-2948
NSN 5905-00-039-8965
NSN 7035-01-205-6909
NSN 5915-00-733-3694
NSN 5950-01-481-4173
NSN 5895-00-770-8445
NSN 5990-01-309-3740
NSN 5945-01-222-1658
NSN 5996-00-823-4789