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  • My ultegra disc callipers are leaking fluid from the nipple. Anyone had this before? Is it a new seal needed? New calliper? It’s done up tight but the lbs mechanic was crack handed with it before so not sure if he was able to mess something up.

  • from the bleed nipple (or fitting) ?

    Shimano bleed nipples work by the bottom being jammed against a narrowing in the calliper fluid tunnel. The rubber seal is only for when it is open. So before anything else, try to tighten the nipple a bit more...

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