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Re: Brake hose not sealing to caliper - Clio MK2 Rear Disc
If the nut is going home fully, the issue will be with the flared end of the tube.
The shape takes the place of an olive and forms a seal between the end of the nut and the bottom of the caliper thread.
If that has become mis-shaped or distorted, you are on a hiding to nothing.
Replace the pipe.
The other end should not give same issues.
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