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 6135-01-297-2308
NSN 5998-00-942-9269
NSN 7035-01-429-7954
NSN 5945-01-444-6440
NSN 5910-01-244-2836
NSN 5975-01-257-4425
NSN 6240-00-033-9594
NSN 5945-01-372-2883
NSN 6130-01-592-2328
NSN 6145-01-392-6545
NSN 5905-01-102-8216
NSN 5915-00-274-2282