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 5950-01-656-1137
NSN 7035-01-442-7947
NSN 5835-01-498-9410
NSN 5935-01-521-9500
NSN 6650-01-204-2524
NSN 6685-00-468-4223
NSN 6620-01-182-2853
NSN 5915-01-520-3417
NSN 7035-00-574-4223
NSN 2925-01-583-0736
NSN 6620-01-590-7035
NSN 5905-00-499-7787