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 5998-00-471-6000
NSN 5910-01-517-3879
NSN 5998-00-015-6814
NSN 5999-01-644-2460
NSN 6145-01-492-9840
NSN 5998-01-359-8875
NSN 6320-00-456-2092
NSN 4140-01-089-9724
NSN 5996-01-126-3885
NSN 5920-01-551-1295
NSN 5905-00-400-8395
NSN 6320-00-242-3300