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 5895-01-619-8034
NSN 5990-01-527-4868
NSN 5925-00-627-2011
NSN 6130-01-449-2282
NSN 6220-01-626-8270
NSN 5945-01-350-3254
NSN 6320-01-523-4954
NSN 6240-01-195-8696
NSN 5835-00-113-6090
NSN 5960-01-522-0391
NSN 5965-01-134-8078
NSN 5905-01-243-0102