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 5965-01-348-0079
NSN 5999-00-406-5773
NSN 6110-00-052-2655
NSN 5895-01-467-9401
NSN 6145-00-797-3454
NSN 5975-00-815-2160
NSN 6620-01-294-1044
NSN 6620-01-367-2597
NSN 6110-01-454-5706
NSN 2925-01-537-7625
NSN 6650-01-429-6692
NSN 5998-01-243-0003