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 6610-00-433-3530
NSN 5965-01-470-0393
NSN 6610-01-487-8307
NSN 6220-00-985-0847
NSN 5915-01-005-0164
NSN 5835-01-123-8305
NSN 5935-01-334-7025
NSN 6610-00-241-2211
NSN 5835-01-100-3265
NSN 6145-01-457-6719
NSN 5965-01-424-0542
NSN 5895-01-357-6378