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 5965-00-451-0518
NSN 5985-01-614-3419
NSN 6105-01-123-6123
NSN 6620-01-454-2450
NSN 5905-00-172-9682
NSN 5835-01-074-7593
NSN 6685-01-415-5999
NSN 5910-01-290-3769
NSN 5930-00-306-4181
NSN 6320-01-378-6191
NSN 6150-01-386-9205
NSN 5960-00-605-9192