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 5985-01-288-6737
NSN 6320-00-731-6134
NSN 5935-01-401-5324
NSN 5915-01-026-0457
NSN 5905-00-834-1756
NSN 5996-00-316-5115
NSN 6320-00-313-9114
NSN 6685-00-732-1927
NSN 4140-01-025-1555
NSN 5996-01-016-2724
NSN 6645-00-583-0066
NSN 6110-00-028-6729