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in hydraulic and high pressure applications, the ferrule must be fitted so that the longest sloping face of the ferrule faces away from the nut. Hydraulic-style ferrules have one end which is larger with a 45 degree chamfer which tapers away (from installation contact with the nut), and a small end with two internal biting edges.When the nut is tightened, the ferrule is compressed between the nut and the receiving fitting, causing both ends of the ferrule to be clamped around the pipe. The result is that the ferrule

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