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 6645-01-227-2036
NSN 6110-00-256-6614
NSN 6130-00-155-9918
NSN 6110-01-317-4286
NSN 5910-00-267-9071
NSN 5905-00-827-1159
NSN 5920-01-338-8175
NSN 5935-01-158-5585
NSN 5920-01-111-1214
NSN 5835-01-253-8092
NSN 5905-00-949-1290
NSN 5905-00-042-9549