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 5945-00-406-8761
NSN 5960-01-328-8248
NSN 7035-00-991-6877
NSN 6150-01-464-3736
NSN 6135-01-420-5907
NSN 5965-01-083-8006
NSN 5945-01-350-3649
NSN 5905-01-557-2981
NSN 6110-01-590-0895
NSN 5998-01-370-8274
NSN 5915-01-437-8858
NSN 6130-01-174-0443