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 5930-00-010-8134
NSN 5835-00-484-1529
NSN 5895-00-153-2595
NSN 5835-01-346-9575
NSN 6220-01-088-6604
NSN 5945-00-454-6231
NSN 5999-01-484-2589
NSN 6320-01-265-0665
NSN 6135-01-200-5144
NSN 5910-01-360-1447
NSN 5975-01-269-5295
NSN 5960-00-418-3588