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 5998-01-394-3797
NSN 6105-01-394-6328
NSN 5930-00-927-1539
NSN 5990-01-449-7090
NSN 7035-01-078-0155
NSN 6320-01-582-6668
NSN 7035-00-830-1235
NSN 5950-01-495-0624
NSN 6240-01-430-4252
NSN 6145-00-267-9617
NSN 5996-01-397-2142
NSN 6105-01-531-2742