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post #1 of 6 Old 03-12-2010 Thread Starter
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teflon tape

Is it recommended to use teflon tape on diesel fuel fittings? I may have heard somewhere it was not but I am not sure.
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post #2 of 6 Old 03-13-2010
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Yes you should use teflon tape for normal threaded fittings, but not for flared or compression fittings. For diesel yellow teflon tape is normally used. When googling this I found a different solution below that makes a good case for liquid thread sealant instead of tape.
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post #3 of 6 Old 03-13-2010
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Use the paste/liquid version for fuel and hydraulic lines as mentioned above. It can be found in most hardware stores, I am curently using a bottle of Taylors DIY's own labled product.
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post #4 of 6 Old 03-13-2010
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If you do decided to use tape just be careful not to have any of the tape extend past the lowest tread. Air systems etc are all prone to issues if they get little pieces of tape in the wrong spot but careful application should avoid this.
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post #5 of 6 Old 03-13-2010
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Like mitiempo stated be sure to use tape that's made for diesel systems. Otherwise the diesel will eventually break it down and you can end up with bits of it clogging your fuel system. Another option is to use a Locktite type product made for diesel fuel systems. Sorry I can't remember specifically what I used.
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post #6 of 6 Old 03-13-2010
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One of my fuel pumps:



Kind of sums it up...

I use Hercules Real-Tuff and have for years with excellent results just be careful not to put too much on or have it extend beyond the first thread.

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-Maine Sail / CS-36T


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