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 5998-01-418-8065
NSN 5920-01-086-7219
NSN 5915-01-429-8665
NSN 4140-01-012-2460
NSN 6645-00-181-1877
NSN 6650-01-529-6721
NSN 5905-01-110-7472
NSN 6320-00-483-0451
NSN 5930-01-518-4867
NSN 6150-00-097-6136
NSN 6150-01-027-0798
NSN 6105-00-468-6323