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 6145-01-620-4400
NSN 5950-01-456-4670
NSN 6320-01-250-0290
NSN 5930-01-251-5718
NSN 5920-01-010-3293
NSN 6220-01-145-1183
NSN 6150-00-337-8328
NSN 5930-01-092-0386
NSN 6240-01-256-4570
NSN 4140-01-054-1201
NSN 5960-00-810-8560
NSN 5835-00-665-3395