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 6135-00-947-7091
NSN 5945-01-039-9089
NSN 7035-01-421-4446
NSN 5915-01-514-7136
NSN 5990-00-682-3531
NSN 5999-01-054-1901
NSN 5985-00-199-4979
NSN 5905-01-014-1415
NSN 5920-01-107-0838
NSN 5915-01-650-5875
NSN 5945-01-380-3876
NSN 5945-00-262-0888