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 6685-01-298-4665
NSN 5945-01-575-0755
NSN 5895-00-435-4026
NSN 5975-01-286-7578
NSN 6135-00-347-0595
NSN 6610-00-191-5317
NSN 5895-00-263-3982
NSN 5985-01-467-4941
NSN 6145-01-097-0746
NSN 5915-01-224-7044
NSN 6105-01-038-0588
NSN 5855-01-447-3137