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 5945-00-166-6330
NSN 5920-01-429-2649
NSN 5915-00-198-3881
NSN 5895-01-062-1405
NSN 6145-01-111-9553
NSN 5945-01-422-5394
NSN 5905-01-496-5227
NSN 5990-01-327-1558
NSN 5930-01-491-1452
NSN 2925-01-583-5619
NSN 6320-01-544-6447
NSN 6150-01-066-0216