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 6135-01-307-6006
NSN 5998-00-538-6037
NSN 6135-00-998-5884
NSN 6150-00-099-6919
NSN 5895-00-632-0901
NSN 6135-01-643-5809
NSN 6240-00-225-5128
NSN 6110-01-368-1528
NSN 5945-01-452-5473
NSN 5925-01-265-0832
NSN 5945-01-336-2973
NSN 5835-00-841-2650