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 6145-01-476-3820
NSN 5905-01-245-3450
NSN 6105-01-156-6873
NSN 2925-01-437-1128
NSN 6110-01-525-6890
NSN 5998-01-485-8566
NSN 6130-01-424-2110
NSN 5925-00-244-0711
NSN 5835-01-362-8367
NSN 6320-01-399-6177
NSN 6145-00-933-7024
NSN 5935-01-453-0115