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 5996-01-010-4333
NSN 5915-01-044-4480
NSN 5910-01-653-2168
NSN 5985-00-254-7185
NSN 5910-01-416-2199
NSN 5905-00-752-7360
NSN 6130-00-405-0402
NSN 6320-00-937-5625
NSN 5930-00-291-0852
NSN 6650-01-420-8366
NSN 6620-01-616-1772
NSN 5895-00-006-8131