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 6240-00-715-5118
NSN 5855-01-610-1766
NSN 5935-00-486-0930
NSN 5945-01-300-7725
NSN 5935-00-349-4879
NSN 5925-00-116-4888
NSN 6620-01-032-3937
NSN 5915-01-659-5345
NSN 6320-01-305-5881
NSN 6150-01-449-3165
NSN 5910-01-433-0142
NSN 6240-00-677-0305