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 2925-01-085-0691
NSN 5935-01-273-7266
NSN 6610-01-165-9458
NSN 6610-01-400-2296
NSN 6150-01-573-1120
NSN 5960-01-386-7086
NSN 5835-00-891-2232
NSN 5935-01-485-5680
NSN 5960-01-320-7675
NSN 5835-01-491-4613
NSN 6110-01-611-8568
NSN 5960-00-082-0493