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 6130-01-076-7362
NSN 5905-01-322-4901
NSN 5998-01-123-7093
NSN 5998-00-899-0995
NSN 5950-00-637-6131
NSN 5998-00-632-3063
NSN 5855-01-144-4837
NSN 5990-01-162-9220
NSN 6685-01-025-6145
NSN 5960-00-411-3578
NSN 5855-00-185-1560
NSN 7035-01-364-0286