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Thread: Brake line Problem
          
   
   

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  1. #5
    Frisco is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2006
    Location
    Canton
    Car Year, Make, Model: 1931 Ford Roadster
    Posts
    46

    No thread tape or thread sealant should be used on brake lines at the AN fittings or any "standard" brake fittings. Thread tape can be used on any tapered pipe threaded fittings because the "seal" is made by the tapered fit of the threads.

    Standard brake line fittings use a 45 degree double flare to seal.

    AN fittings use a 37 degree single flare to seal.

    The seal is carried out by the angled fit; not by the threads.

    AN fittings (37 degree) are not interchangeable with standard fittings (45 degree) to create a seal.

    I have never seen a double flaring tool made for AN fittings. How are you doing this?
    Last edited by Frisco; 01-04-2007 at 09:03 AM.

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