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 5835-01-005-8564
NSN 6150-01-346-4668
NSN 6130-01-462-0662
NSN 5945-01-387-6742
NSN 5910-01-129-4162
NSN 5960-00-628-2003
NSN 6105-01-325-4768
NSN 6130-01-360-4507
NSN 7035-01-045-7202
NSN 6130-00-959-5800
NSN 5925-01-501-5213
NSN 6105-01-399-8140