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 5835-01-538-8080
NSN 5985-01-145-1470
NSN 5930-01-328-8443
NSN 6320-00-809-5744
NSN 5910-01-349-7189
NSN 5915-00-172-8089
NSN 6620-01-416-9882
NSN 5935-01-328-7148
NSN 6650-01-431-9625
NSN 6610-01-207-0045
NSN 6650-01-123-3110
NSN 5990-01-388-0252