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 5960-00-266-6741
NSN 5990-01-468-1292
NSN 6130-01-112-9084
NSN 5998-01-647-5395
NSN 5915-01-346-3040
NSN 5935-01-487-3783
NSN 5945-00-469-1622
NSN 6610-01-281-6764
NSN 6240-01-032-5105
NSN 5998-00-835-7261
NSN 6240-01-024-3917
NSN 6610-01-436-2803