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 5855-01-281-9700
NSN 5985-01-631-2997
NSN 5996-00-287-6366
NSN 6150-01-573-5167
NSN 6135-01-125-4867
NSN 5930-01-574-4729
NSN 6135-01-309-8414
NSN 5930-01-170-2925
NSN 5975-01-319-6892
NSN 5835-01-147-7526
NSN 5985-01-186-6646
NSN 5998-00-596-8869