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 5960-01-548-4896
NSN 5999-01-115-6403
NSN 5996-01-598-6274
NSN 5915-01-445-2422
NSN 5915-01-579-4810
NSN 6105-01-478-6400
NSN 5920-01-377-3401
NSN 6650-01-599-9849
NSN 5999-01-307-2783
NSN 5985-01-172-2473
NSN 4140-01-433-1192
NSN 5996-01-531-8564