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 5935-00-517-9638
NSN 6320-01-541-7585
NSN 6320-00-405-2348
NSN 6650-01-350-2172
NSN 5965-01-106-4969
NSN 6135-00-660-8654
NSN 5965-01-633-4899
NSN 5835-00-005-7909
NSN 5998-00-727-3709
NSN 5935-00-368-9746
NSN 4140-01-378-6386
NSN 2925-01-123-5856