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 5945-01-062-0206
NSN 5998-01-412-0928
NSN 6145-01-073-6641
NSN 5925-01-211-6660
NSN 5950-01-102-1542
NSN 6650-00-670-2516
NSN 6150-01-644-6166
NSN 5960-00-163-9204
NSN 5985-01-219-2475
NSN 5996-00-425-7481
NSN 5915-01-046-1125
NSN 5945-00-834-0278