Compression fittings arent designed for high brake line pressure and can leak during heavy braking. Whatever the situation you are always safe bringing your old brake lines to one of hose fittings etcs stores for accurate identification fabrication and replacement of old brake lines.

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Are brake line unions safe. In addition compression fittings are known to leak when used on brake lines causing a loss in brake fluid and ultimately failure of the braking system. Posted by marek bobik vincent lockwood. I have never seen npt fittings on brake lines. Not safe but legal. Unfortunately using brake line compression fittings presents multiple problems. Thats not only bad practice its just not safe.
The vehicle code does not care about what fittings are connected with. Technically the stainless braided an brake lines arent legal either since they dont have the fmvss 106 required dot printed on them but that isnt to suggest that they arent safe. Diysave10 online ship to home orders only. Brake line fittings end configurations. Get an exact fit for your vehicle. They are always flare fittings and they require no sealers st all oldsman apr 1 2019.
We americans have a huge gap between functional and legal but a narrow gap between legal and moral. What you cant do is use compression fittings or single flare plumbing unions to make a brake line splice. Single flare plumbing unions are a big no as well. Nov 16 2011 posts. 1 24 of 115 results. The vehicle code only cares that the brakes work.
Compression fittings will fail in brake hoses. Ags 15 brakelines 100 this is a test. Brake lines are susceptible to becoming brittle rusting and leaking which degrades the reliability of the brake system. Brake line repair is a necessary maintenance step in many vehicles as they begin to age. Exposure to the elements of nature is the main reason that brake lines degrade. Because your brake system creates a substantial amount of pressure the compression fittings are prone to failure.