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 5905-01-162-4581
NSN 5910-01-335-6449
NSN 6145-01-256-9681
NSN 5985-01-055-6688
NSN 5990-01-324-7529
NSN 5960-00-960-3177
NSN 6240-00-269-3346
NSN 5965-01-229-8721
NSN 6110-01-561-6263
NSN 6145-00-809-6105
NSN 5835-00-140-8646
NSN 5935-01-248-7211