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 5950-00-872-9218
NSN 5996-01-293-9220
NSN 5985-00-073-6487
NSN 5930-01-103-6259
NSN 5930-01-306-7799
NSN 6130-01-276-7780
NSN 6240-01-652-8378
NSN 5905-00-683-8096
NSN 5945-00-797-8739
NSN 5996-01-364-4168
NSN 6135-00-377-9165
NSN 5930-01-634-0659