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 5835-00-958-6231
NSN 6240-01-502-2530
NSN 6685-01-309-3264
NSN 5910-01-387-9488
NSN 5945-01-091-2544
NSN 7035-00-193-2269
NSN 6685-00-767-6108
NSN 5945-01-462-5903
NSN 5975-00-574-0855
NSN 6105-00-035-8809
NSN 6610-01-247-6374
NSN 5895-01-115-6467