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 6650-00-458-7586
NSN 6105-01-268-1423
NSN 7035-01-063-8753
NSN 6685-01-529-6990
NSN 5920-00-829-3634
NSN 5985-01-513-2182
NSN 5945-01-523-4582
NSN 5895-01-174-5253
NSN 5950-00-119-2641
NSN 5965-01-432-1943
NSN 5930-01-147-5846
NSN 6610-01-037-9858