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 6650-00-104-5368
NSN 6610-01-207-0045
NSN 5855-00-151-3853
NSN 6105-01-432-2249
NSN 6620-01-550-8573
NSN 6110-00-936-0487
NSN 5920-00-912-6494
NSN 5999-01-316-0541
NSN 6320-01-170-4068
NSN 5905-01-323-1463
NSN 5945-00-670-6565
NSN 5920-01-200-0683