Material is steel, federal standard no. 66; steel no.S 1008 to 1022
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 5935-00-203-4764
NSN 5855-00-149-0766
NSN 5965-00-110-3330
NSN 6135-00-078-9931
NSN 6610-00-058-9527
NSN 5910-00-045-3051
NSN 5915-00-049-3648
NSN 6645-00-097-4613
NSN 2925-00-284-1534
NSN 5835-01-173-1578
NSN 6220-01-248-4449
NSN 5950-01-024-9193