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 6110-00-936-8416
NSN 5985-01-055-0193
NSN 6240-01-433-3212
NSN 5996-00-671-7304
NSN 5960-01-297-2665
NSN 6650-01-364-8504
NSN 6645-00-837-2267
NSN 6110-01-128-5018
NSN 5835-00-617-3578
NSN 5855-01-147-4785
NSN 5990-01-306-9290
NSN 6645-00-467-6094