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 5895-01-430-9208
NSN 7035-01-145-5059
NSN 5910-01-485-3636
NSN 5925-00-150-1072
NSN 5985-00-872-8896
NSN 5998-00-572-3353
NSN 6110-00-422-4973
NSN 5998-00-453-2397
NSN 5915-01-041-9188
NSN 6105-00-675-4743
NSN 6130-00-191-4987
NSN 5996-01-509-4874