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 5915-01-301-5454
NSN 5915-01-325-4574
NSN 6150-00-402-0799
NSN 6220-00-174-4749
NSN 6110-01-227-3055
NSN 6610-00-880-5204
NSN 5910-01-499-4766
NSN 5996-01-400-3558
NSN 6110-00-596-9124
NSN 5999-01-640-7283
NSN 6105-00-292-4110
NSN 5998-01-323-9223