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 5996-01-093-5710
NSN 6240-01-125-6901
NSN 6220-01-463-9826
NSN 5960-00-257-4203
NSN 6105-01-386-6167
NSN 5960-00-681-0395
NSN 6110-01-115-6034
NSN 5915-00-906-2214
NSN 6610-00-776-3235
NSN 5996-01-077-8553
NSN 5835-00-227-7372
NSN 5996-01-018-1635