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 5960-01-467-7516
NSN 5905-01-102-9330
NSN 5960-01-461-9284
NSN 5920-01-153-2690
NSN 5930-01-049-4528
NSN 6620-01-219-9413
NSN 6150-00-946-6954
NSN 6150-00-236-4298
NSN 6620-01-315-5741
NSN 5835-01-162-8353
NSN 5950-01-268-2952
NSN 5965-00-764-1841