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 5998-01-619-1192
NSN 6610-01-134-4516
NSN 6220-01-494-4776
NSN 5990-00-583-3254
NSN 5996-01-633-7979
NSN 7035-00-225-6499
NSN 5915-01-395-9843
NSN 6220-01-591-7348
NSN 5996-01-381-1316
NSN 5930-01-429-9275
NSN 5835-00-593-6365
NSN 5960-00-281-0824