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 6240-00-919-9186
NSN 5998-00-262-4879
NSN 6150-01-418-8715
NSN 5925-00-932-3027
NSN 6150-00-421-8774
NSN 6650-01-026-6572
NSN 5910-00-590-6966
NSN 5915-01-661-1817
NSN 6150-01-153-2796
NSN 5996-00-193-3459
NSN 6130-00-276-0658
NSN 5950-00-935-0232