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 5915-01-585-2987
NSN 4140-01-565-4546
NSN 5910-01-170-9099
NSN 5950-01-630-0597
NSN 5925-01-063-7107
NSN 5998-01-106-3446
NSN 5999-01-027-1252
NSN 5920-00-552-1567
NSN 5965-01-210-7784
NSN 5998-01-563-7050
NSN 6320-00-937-5625
NSN 6135-00-906-0984