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 6145-01-288-0180
NSN 6135-00-708-0892
NSN 6145-01-365-7801
NSN 5999-00-618-1040
NSN 5895-00-928-6939
NSN 6150-01-229-2075
NSN 6110-00-950-2309
NSN 5915-00-885-0335
NSN 6110-00-118-6174
NSN 5985-00-762-1728
NSN 5920-00-180-0223
NSN 6145-01-407-2143