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 5935-01-181-5363
NSN 5910-01-487-4365
NSN 5985-00-369-5649
NSN 5915-01-433-3393
NSN 5935-00-410-0518
NSN 5999-01-157-9643
NSN 6220-01-294-7164
NSN 6620-01-435-2784
NSN 5905-01-394-3728
NSN 5945-00-258-1705
NSN 5996-01-483-7369
NSN 5905-00-220-9434