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 6105-00-328-0793
NSN 6610-01-509-0544
NSN 5920-00-291-1379
NSN 6145-01-217-5295
NSN 5905-01-113-8116
NSN 5999-01-338-8502
NSN 6135-00-990-1822
NSN 5920-01-057-7494
NSN 5998-01-032-6385
NSN 5930-01-409-2583
NSN 6685-00-149-1600
NSN 5895-01-171-7250