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 6145-01-278-6903
NSN 6145-00-024-6683
NSN 5915-01-299-3023
NSN 6135-01-379-0393
NSN 5915-01-074-2008
NSN 5925-00-103-5158
NSN 6240-00-243-5796
NSN 6610-01-046-8568
NSN 6220-01-182-7737
NSN 6240-00-467-7295
NSN 5925-01-251-0475
NSN 5965-01-431-7377