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 5999-00-389-9283
NSN 5905-01-634-0595
NSN 6220-00-840-0209
NSN 5915-01-267-5141
NSN 5920-01-544-8371
NSN 5998-00-274-3268
NSN 4140-01-037-1867
NSN 5835-01-089-1076
NSN 5905-01-381-2552
NSN 5930-00-288-1882
NSN 6240-01-645-4797
NSN 2925-01-494-8360