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 5835-00-341-5441
NSN 6240-01-184-6831
NSN 2925-01-068-3844
NSN 5975-01-151-3300
NSN 5835-01-355-3654
NSN 5905-01-151-9394
NSN 6145-01-080-9295
NSN 6105-01-360-6793
NSN 6240-01-608-1030
NSN 6145-00-342-8122
NSN 5960-00-965-5577
NSN 6145-00-427-7201