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 5910-01-272-1352
NSN 6220-00-146-9332
NSN 5935-01-568-1429
NSN 5998-01-321-6232
NSN 5975-01-246-4609
NSN 5855-00-862-3345
NSN 5930-01-321-6228
NSN 5950-00-968-7913
NSN 6150-01-288-0733
NSN 6150-01-346-0811
NSN 5998-00-317-2857
NSN 2925-01-254-3068