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 6610-00-994-8472
NSN 5935-00-755-9684
NSN 6240-00-766-6802
NSN 5990-01-249-8212
NSN 5925-01-540-3872
NSN 5910-00-345-7603
NSN 5990-01-211-6136
NSN 5945-01-629-0945
NSN 5999-00-824-9867
NSN 6240-01-258-5829
NSN 6650-01-519-3818
NSN 6145-00-062-7897