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 5950-00-199-8153
NSN 5910-01-272-8482
NSN 6105-00-982-0630
NSN 4140-00-060-4052
NSN 5960-00-506-8064
NSN 6110-01-152-2831
NSN 6610-01-299-7171
NSN 4140-00-573-5721
NSN 5950-01-112-1172
NSN 6150-01-056-4345
NSN 5998-01-370-2418
NSN 5996-01-459-8014