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 6150-01-223-7292
NSN 6130-01-390-7413
NSN 6645-01-360-4562
NSN 5920-00-201-4914
NSN 6105-01-451-1864
NSN 6135-00-016-0071
NSN 6240-00-283-9598
NSN 6150-01-259-1629
NSN 6150-00-450-8268
NSN 5945-00-927-7206
NSN 6650-01-406-5322
NSN 6320-00-098-2858