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 6320-00-809-5744
NSN 6145-00-213-9181
NSN 5985-01-427-3734
NSN 5975-01-364-1117
NSN 6650-01-410-7526
NSN 7035-01-068-4175
NSN 5950-01-647-9308
NSN 5905-01-459-7797
NSN 5835-01-173-8003
NSN 6620-00-575-9230
NSN 6110-01-483-2696
NSN 5996-01-442-8296