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 5960-00-736-8568
NSN 6130-00-925-2038
NSN 5915-01-518-9310
NSN 5998-01-506-5742
NSN 6130-00-598-2034
NSN 5910-01-152-7527
NSN 5910-01-232-1256
NSN 6105-00-351-3273
NSN 5920-00-585-0104
NSN 6320-01-399-6177
NSN 5960-01-183-8213
NSN 5930-01-093-7804