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 5998-00-578-8429
NSN 6105-01-484-7197
NSN 5999-01-361-8950
NSN 5999-01-350-3137
NSN 5915-00-368-4564
NSN 6320-00-456-0836
NSN 5985-01-103-5401
NSN 5915-00-104-1403
NSN 5996-00-090-6663
NSN 5835-00-130-6404
NSN 6650-00-372-6035
NSN 5895-01-290-7874