13 minutes ago, potato_man said:
i just measured the OD of the tubing and ID of the fitting. Tubing OD is 14mm and fitting ID is 14.5mm. Also what do you mean by compressed? I'm not using compression fittings.
Those fittings you listed are hardline compression fittings they compress the oring which then pushes onto the exterior diameter of the tubing to hold into place. Are you not installing the second oring between the barb section and the compression ring?
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