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 5915-01-435-1679
NSN 6150-01-432-1020
NSN 6240-00-803-2777
NSN 6240-01-064-9727
NSN 5895-00-058-9591
NSN 6105-00-099-8818
NSN 4140-00-283-6843
NSN 6130-01-164-4098
NSN 5965-00-898-1356
NSN 6135-01-551-0562
NSN 5998-00-738-7731
NSN 6130-01-422-0967