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 6130-00-078-3824
NSN 6150-01-122-3532
NSN 6220-01-088-7646
NSN 5930-01-516-5278
NSN 6220-00-198-5026
NSN 6110-00-839-8026
NSN 6620-00-237-9395
NSN 6620-01-453-3135
NSN 5996-01-258-5888
NSN 5930-01-650-1834
NSN 5935-00-486-9115
NSN 6240-00-389-4822