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 6320-01-260-4301
NSN 6610-01-506-0044
NSN 5985-01-265-1100
NSN 5920-01-587-7579
NSN 6130-01-593-0994
NSN 5950-00-228-8254
NSN 6130-01-025-5995
NSN 6610-01-605-2451
NSN 5965-01-158-4187
NSN 5960-00-462-3393
NSN 6620-01-542-0494
NSN 5855-00-610-4052