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 6105-01-492-2086
NSN 5965-00-693-8829
NSN 5996-00-196-7258
NSN 5935-01-503-2696
NSN 5960-00-709-5068
NSN 5975-00-162-9530
NSN 5935-01-414-4954
NSN 5965-01-222-1420
NSN 6320-01-416-9357
NSN 6105-01-142-4551
NSN 5960-00-539-7914
NSN 2925-01-507-7877