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 5945-00-252-5680
NSN 6150-01-021-2678
NSN 5920-01-048-6907
NSN 2925-01-564-8043
NSN 5915-01-462-0432
NSN 5996-00-176-0999
NSN 5855-01-057-7818
NSN 5950-01-334-9638
NSN 7035-01-529-4603
NSN 5835-01-123-8305
NSN 5960-00-993-1857
NSN 6105-01-227-3003