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 5998-01-642-0938
NSN 6110-01-556-2691
NSN 5998-01-188-7999
NSN 6130-01-568-4928
NSN 6130-00-978-6703
NSN 6150-01-456-9164
NSN 6320-01-032-9703
NSN 5990-01-525-2250
NSN 6145-01-311-8785
NSN 5950-01-328-4592
NSN 6620-00-363-7528
NSN 5920-01-605-1468