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 6320-01-177-3192
NSN 6135-01-619-1582
NSN 5895-01-359-1140
NSN 6320-01-300-7994
NSN 5935-01-510-2520
NSN 5998-01-323-7112
NSN 5985-00-674-3203
NSN 5999-00-280-3499
NSN 6130-01-541-4979
NSN 6135-00-027-3914
NSN 5855-01-213-9076
NSN 6645-00-888-5820