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 6105-01-507-3012
NSN 5910-01-130-6115
NSN 6135-01-528-6896
NSN 5965-01-112-5518
NSN 5915-00-514-2098
NSN 6650-01-543-2525
NSN 5925-00-192-9630
NSN 5996-00-552-9902
NSN 6145-01-546-5154
NSN 5985-00-146-2450
NSN 5945-00-232-0460
NSN 5935-00-853-9736