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 6650-01-399-0328
NSN 6145-00-161-2394
NSN 5920-01-368-8609
NSN 5920-01-543-5134
NSN 6620-01-512-0132
NSN 6320-00-405-2348
NSN 6145-00-394-4511
NSN 5835-00-794-7500
NSN 5950-00-959-8581
NSN 5960-01-081-7745
NSN 5925-01-070-0221
NSN 2925-01-502-5896