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 6320-00-422-9006
NSN 5915-00-270-1076
NSN 7035-00-131-8219
NSN 6610-01-626-2062
NSN 6105-01-252-0381
NSN 6150-01-477-8853
NSN 5950-01-611-0083
NSN 6320-01-056-1164
NSN 6610-00-388-9188
NSN 5895-01-422-5477
NSN 5965-01-519-1929
NSN 6650-01-441-3624