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 5985-01-228-8468
NSN 5895-01-432-1279
NSN 6110-01-556-6862
NSN 5895-01-599-8268
NSN 6110-01-416-8300
NSN 6610-00-278-7647
NSN 5960-00-322-8562
NSN 5985-00-614-2744
NSN 5905-01-468-5149
NSN 6610-01-507-4356
NSN 5945-01-235-1267
NSN 7035-00-968-4848