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 6105-01-229-2170
NSN 6105-01-309-5313
NSN 6110-00-770-5845
NSN 5965-01-399-4530
NSN 6650-00-937-2184
NSN 5965-01-462-8230
NSN 6150-01-128-3227
NSN 6240-00-042-7136
NSN 5985-00-952-0004
NSN 6150-01-068-3291
NSN 5999-00-388-0584
NSN 2925-01-399-2765