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 5895-01-470-9864
NSN 5935-00-221-3720
NSN 6145-01-581-0527
NSN 5935-01-166-4547
NSN 5915-01-289-0764
NSN 5950-00-984-4094
NSN 5835-01-050-7882
NSN 5855-00-058-1293
NSN 6650-00-356-8405
NSN 5930-01-363-2528
NSN 5950-01-251-1386
NSN 5945-01-539-4912