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 5905-01-632-1715
NSN 5985-00-822-8671
NSN 5915-01-243-6682
NSN 5945-01-454-1400
NSN 5945-00-233-6790
NSN 5930-00-036-7202
NSN 5930-01-503-2646
NSN 5950-01-130-2171
NSN 6130-01-626-5404
NSN 5996-01-171-2132
NSN 5985-01-083-7340
NSN 6610-01-319-5039