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 5835-00-196-9771
NSN 5996-01-062-0807
NSN 5985-01-476-6119
NSN 6105-00-003-0244
NSN 6130-00-022-0596
NSN 5985-00-119-5747
NSN 6145-00-495-7391
NSN 6135-01-552-1568
NSN 6150-00-352-6606
NSN 5960-01-184-3436
NSN 5996-00-707-6228
NSN 5835-01-618-7621