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 6220-01-197-7680
NSN 5930-01-559-2726
NSN 5835-01-604-2279
NSN 5835-01-430-4765
NSN 6150-01-412-0076
NSN 5920-01-055-9065
NSN 4140-00-569-4096
NSN 6110-01-511-9917
NSN 5835-01-442-6482
NSN 6105-00-759-9769
NSN 5920-00-569-6435
NSN 7035-00-794-0792