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 6220-00-423-6878
NSN 5835-01-422-7393
NSN 5998-01-481-9229
NSN 5975-01-248-2723
NSN 5920-01-151-7888
NSN 5905-01-412-6896
NSN 5935-00-233-5430
NSN 6650-00-754-2276
NSN 5998-01-558-5601
NSN 6150-01-655-6465
NSN 5960-01-339-0008
NSN 5945-01-624-3390