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 6320-00-405-2348
NSN 5905-01-252-7720
NSN 6135-00-062-5080
NSN 5990-01-443-2931
NSN 5905-00-369-1644
NSN 5998-01-551-3173
NSN 5855-00-763-2155
NSN 6110-00-088-5078
NSN 6110-01-154-7066
NSN 5950-01-364-0800
NSN 5935-01-535-9355
NSN 5855-01-380-6186