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What is the correct sealant to use on diesel fuel line threads?
I'm installing an aux fuel tank plumbed to my fuel filler neck. The kit from RDS doesn't tell me what, if any thread sealer I should use on the threads for the shutoff fitting at the tank, or the check valve at the filler neck?
I'm not sure if teflon tape is ok? Does anyone know what I should use on these threads. Everything is aluminum.
First thing to think about is the type of fittings you have. No sealant is used on flare fittings, compression fittings, and several other types, but a npt fitting requires it. Assuming you do need sealant,i believe teflon tape would hold up BUT its likely to have some loose pieces of tape inside that may clog up the strainer, so I would use a sealant that you apply as a liquid such as the permatex. The package should specify what it is and is not suitable for
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