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 6650-01-367-4989
NSN 4140-01-508-6550
NSN 6135-01-552-1568
NSN 6130-01-345-3655
NSN 6650-01-413-8408
NSN 5915-01-112-8393
NSN 5920-00-238-4678
NSN 6150-00-882-7247
NSN 5935-00-284-8306
NSN 6130-01-523-3870
NSN 5920-00-610-3209
NSN 5945-01-323-6496