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 6135-01-437-7741
NSN 6105-00-536-4569
NSN 5985-00-544-9426
NSN 6130-01-097-3161
NSN 2925-01-011-8732
NSN 6685-01-222-1762
NSN 6110-01-099-6893
NSN 5935-01-240-4324
NSN 5905-00-871-4158
NSN 5998-01-432-1829
NSN 6150-01-543-9876
NSN 5965-00-932-4591