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 6130-01-130-4916
NSN 5945-00-293-8333
NSN 6105-01-060-6269
NSN 5905-01-161-2981
NSN 5950-00-149-3059
NSN 5950-01-423-8208
NSN 5920-00-455-9743
NSN 5920-00-263-2192
NSN 6240-00-094-7724
NSN 6610-01-500-0863
NSN 5985-00-628-4647
NSN 5915-01-201-9487