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 5915-01-579-6655
NSN 5920-00-522-4233
NSN 5915-01-449-7210
NSN 6650-01-502-4613
NSN 6220-01-267-1411
NSN 5915-01-185-7510
NSN 4140-01-509-4429
NSN 6110-00-421-1650
NSN 5925-01-453-2864
NSN 5950-00-900-3380
NSN 5915-00-150-4694
NSN 6105-01-510-8848