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 6240-00-435-0433
NSN 5920-01-463-3525
NSN 5985-01-116-4529
NSN 5935-01-356-6757
NSN 5998-01-074-6099
NSN 6240-00-242-6231
NSN 6620-01-078-3160
NSN 6105-01-323-6572
NSN 6105-01-425-7889
NSN 6135-01-255-9129
NSN 5920-01-375-7099
NSN 6240-01-191-5643