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 6110-00-500-0475
NSN 5999-01-281-7525
NSN 7035-00-117-0418
NSN 6320-01-473-9024
NSN 6105-00-635-9809
NSN 5998-00-121-8484
NSN 6610-01-367-1640
NSN 5996-01-600-5047
NSN 5930-00-218-1031
NSN 6150-00-276-7483
NSN 6320-00-857-4073
NSN 5895-00-118-7779