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Just getting the last bits together to assemble my surge tank that will house a walbro 460 and I'm not sure on a couple of things.

I need to seal the fittings in the lid of the surge tank as I'm not using weld in style fittings.

Has anyone used those red fuel resistant fibre washers with e85? I will need to leave them submerged in the tank.

Also.. what's the go with fuel hose.. read lots and no real definitive answer. What should I buy.

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The Aeroflow 400 series is apparently ethanol tolerant too, but I have had some perishing issues recently with the outside sheath.

I used copper washers under my bulkhead fittings, I tried teflon washers and they leaked. Alloy washers should work well too.

the SAE standard for biofuels is a minimum of SAE 30r9 ....submersive fuel hose is SAE 30r10. its expensive but good for piece of mind. it has an additional impermiable layer on the inside....don't worry too much about the hose being metal braided unless its in the engine bay where foreign flying objects could cut fuel hose.

Thanks for the info everyone. Exactly what I needed to know.

I'll give the fibre washers a go on the test bench and see how it goes. If not I'll run some copper or alloy. The bulkhead I'm running through the lid is 16.5mm and I could only find copper in 16 or 18mm.

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