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 5950-00-916-6559
NSN 6620-00-602-2072
NSN 6645-00-417-9356
NSN 6240-00-334-6766
NSN 6145-00-472-9413
NSN 5835-01-201-3667
NSN 5930-01-611-9046
NSN 6135-01-255-9129
NSN 6220-00-450-7689
NSN 5996-00-931-2500
NSN 5905-01-032-4866
NSN 6610-00-186-9180