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 5935-01-378-8086
NSN 5920-01-258-3664
NSN 5905-01-525-9803
NSN 5855-00-138-2386
NSN 5965-00-320-7821
NSN 7035-01-184-8905
NSN 5985-01-384-1553
NSN 6240-01-383-7554
NSN 5998-01-485-3332
NSN 5835-00-405-1099
NSN 6240-00-319-0173
NSN 5935-01-331-1615