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 5915-01-599-0585
NSN 5935-01-312-0829
NSN 5930-01-106-2966
NSN 5950-00-967-9367
NSN 6150-01-093-6301
NSN 5930-01-652-6857
NSN 5945-01-425-5714
NSN 6320-00-857-4073
NSN 5895-01-254-2012
NSN 6145-01-433-6858
NSN 7035-01-495-7134
NSN 5835-01-285-1897