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 5905-01-527-8725
NSN 6105-01-186-9803
NSN 5960-00-215-5884
NSN 6610-00-186-9180
NSN 6220-00-272-7497
NSN 6320-00-937-5625
NSN 6320-00-506-2314
NSN 6645-01-525-7493
NSN 5935-01-126-0215
NSN 5990-00-065-9154
NSN 5998-01-620-1912
NSN 5996-01-314-2354