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 5990-00-406-4991
NSN 5935-00-226-3623
NSN 6105-01-328-8470
NSN 6130-01-456-2088
NSN 4140-00-998-2911
NSN 5950-01-412-0262
NSN 6105-00-320-0260
NSN 5855-01-576-4223
NSN 5835-01-098-9702
NSN 5960-01-447-0169
NSN 5925-00-231-8668
NSN 5985-01-251-0213