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 5855-01-380-9950
NSN 2925-01-196-2904
NSN 5998-01-527-4649
NSN 5945-00-558-9155
NSN 5835-01-029-5602
NSN 6685-01-336-2780
NSN 5965-00-918-3950
NSN 5920-01-614-4125
NSN 5975-01-630-5561
NSN 5915-01-493-5957
NSN 5999-01-130-2607
NSN 5930-01-654-7691