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 5945-00-661-0506
NSN 6105-00-831-3552
NSN 5835-01-442-6482
NSN 7035-01-180-8256
NSN 5935-00-810-3176
NSN 6320-01-643-0850
NSN 5855-01-254-3041
NSN 5996-01-437-6227
NSN 5999-00-216-9475
NSN 7035-01-132-4034
NSN 5910-01-604-9141
NSN 5960-01-426-4242