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 6620-00-877-3266
NSN 6610-01-523-8547
NSN 5985-01-523-6060
NSN 6685-01-140-0502
NSN 6105-01-487-5072
NSN 5996-01-055-5247
NSN 6110-01-386-4055
NSN 5935-01-626-6785
NSN 6645-01-447-6777
NSN 6650-01-183-0711
NSN 6220-00-834-2838
NSN 5925-01-227-5536