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 5835-00-193-8951
NSN 5985-00-674-7229
NSN 5925-01-605-3888
NSN 5910-01-518-5156
NSN 5905-01-142-2575
NSN 5895-01-040-3084
NSN 5835-00-050-4330
NSN 5920-00-192-6565
NSN 5985-00-946-7734
NSN 6135-00-883-9024
NSN 6650-01-236-0366
NSN 6145-01-348-8602