Thread: Brake line Problem

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I guess the majority is going to rule on this one. Now I have to re-do all my brake lines. I have been double flaring all my brass and steel fittings just like they do at the factory with my hydraulic tool from MP Brakes and useing 45 degree. Then with the A/N fittings I have I slide the nut on the tube then the piece that goes through the nut and then I double flare the end with my 37 degree anvil. (NOT GOOD HUH?) I guess the single flare on the tube along with the littlle insert under the nut makes it just as strong as a double flare? Thanks guys

The double flare 45 degree SAE fittings are for steel brake line tubing. The single flare 37 degree AN fittings are for stainless brake line tubing.

If you double flare stainless tubing, the flare's will probably crack because the material is not as malleable as regular steel tubing. If you use 45 degree double flared steel tubing with 37 degree AN fittings, you'll probably have leaks. If you use 37 degree double flared steel tubing with AN fittings, It just might work, but that's not the way the fittings were designed to be used! Can you really get a nice tight 37 degree double flare? I've never tried that combination! The 37 degree flaring tools I've seen don't have enough room inside the tool to allow the double flare button to fit!