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 6130-00-450-1072
NSN 5999-00-372-5709
NSN 6130-00-553-8758
NSN 6145-01-324-7054
NSN 5996-00-443-1663
NSN 5960-00-365-9668
NSN 6220-00-548-1999
NSN 6610-01-318-1840
NSN 5920-00-384-8926
NSN 5975-00-146-7925
NSN 5920-01-442-0434
NSN 5985-00-289-9862