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 5996-01-644-5405
NSN 5945-00-481-4876
NSN 5920-01-605-3232
NSN 5960-01-264-9295
NSN 6620-01-261-2985
NSN 5895-01-433-4720
NSN 6135-01-154-3526
NSN 6135-00-377-9165
NSN 6135-01-173-6306
NSN 5999-01-571-4590
NSN 5975-01-151-5442
NSN 6105-01-386-4038