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 5950-01-014-4905
NSN 5999-01-435-0615
NSN 5895-01-507-8581
NSN 6145-01-346-9709
NSN 5920-01-552-9191
NSN 6610-00-905-6780
NSN 5950-01-370-6806
NSN 5960-00-118-8098
NSN 5999-01-210-1116
NSN 5920-00-489-2202
NSN 5920-01-216-8022
NSN 5996-01-147-6054