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 6130-00-156-7219
NSN 5935-00-036-1329
NSN 5855-01-328-7434
NSN 5985-01-187-6427
NSN 6110-01-284-4115
NSN 5998-00-779-3400
NSN 6620-01-479-2352
NSN 5895-01-417-1880
NSN 5905-00-204-0469
NSN 5996-01-289-5704
NSN 6240-01-080-3567
NSN 6220-00-847-1520