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 5960-01-229-6324
NSN 6610-01-447-2560
NSN 6685-01-433-3057
NSN 6105-01-506-9130
NSN 5855-01-388-2424
NSN 6620-01-170-8270
NSN 6145-01-182-3448
NSN 5999-01-361-9839
NSN 6320-00-513-8376
NSN 5895-00-548-5497
NSN 5835-01-126-2480
NSN 6145-01-162-4800