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post #5 of (permalink) Old 07-08-2019, 01:53 PM
gprocket
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A quick google supports what Gubi has said - Teflon (PTFE) is chemically resistant to Glycol-ether based brake fluids (ie, DOT3,4). Teflon tape is not intended to be a sealing product but rather a friction reducer that allows fittings to be threaded in further. And to second Gubi's second point, the bleeder screw seals by bottoming out on the shoulder not from the threads. Not to say that the tape won't act as a gap sealer but you could just as easily use chewing gum - so long as it's resistant to brake fluid...

And to agree with Gubi for a third time (a new record I'm sure ) there is likely another problem with your system if you had complete brake failure when only the fronts failed. Might check your bias valve to be sure your rear brakes are even working...

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