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 2925-00-831-7024
NSN 5925-00-319-4212
NSN 5915-01-076-4538
NSN 6130-01-492-2513
NSN 5975-00-518-1733
NSN 5855-01-147-4785
NSN 5975-00-770-0151
NSN 5999-01-516-4103
NSN 5895-01-612-2943
NSN 5925-01-591-0307
NSN 6150-01-219-8696
NSN 5960-00-159-7309