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 5996-01-561-7365
NSN 5915-00-248-4974
NSN 5910-01-593-9114
NSN 5855-01-147-4785
NSN 6110-01-512-8742
NSN 6135-01-475-1040
NSN 5835-00-170-5238
NSN 6135-01-633-8502
NSN 5930-01-519-2322
NSN 5905-01-523-3038
NSN 5930-01-153-2667
NSN 5915-01-068-3918