Hi guys.. I recently purchased some compression fittings, barbs and tubing. I was seeing how they connect and it seems like, even though the compression fittings and barbs are the same size (All 3/8 x 5/8), they physically are not on the OD? The compression fittings are way more difficult to connect to the tubing than the barbs. Did I order the wrong tubing??
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8/20/16 at 4:05pm