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 6110-01-379-0606
NSN 6145-01-427-3520
NSN 6150-01-086-9418
NSN 5920-01-449-0927
NSN 6150-01-502-2075
NSN 5965-01-343-2543
NSN 5920-01-554-0027
NSN 6145-01-237-2658
NSN 5990-01-443-2931
NSN 6320-00-937-5625
NSN 5895-01-359-3266
NSN 6220-01-471-6219