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 6620-01-152-0936
NSN 5905-01-051-0050
NSN 5960-00-148-4493
NSN 2925-00-712-8180
NSN 6240-01-468-5576
NSN 6145-00-486-3443
NSN 5998-01-627-9250
NSN 5895-00-363-9370
NSN 5999-01-501-5434
NSN 5935-01-502-5803
NSN 6105-00-707-5962
NSN 5950-00-570-0149