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 6610-01-579-0134
NSN 5960-00-839-1529
NSN 5895-00-163-1333
NSN 6685-01-274-5962
NSN 5910-01-069-0266
NSN 5985-00-834-3662
NSN 5950-00-701-5242
NSN 6220-01-040-5653
NSN 5910-00-030-6548
NSN 5935-00-141-2506
NSN 5999-00-610-3265
NSN 7035-01-534-7930