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Old 13-09-2005, 08:32   #1
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Fuel ine thread tape

I think I read somewhere that teflon tape should not be used on fuel fittings. Does anyone know what tape/sealant should be used?


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Old 13-09-2005, 08:48   #2
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Old 13-09-2005, 10:02   #3
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should not need anything, however if really pushed, the locn'seal from loctite is a useful product.
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Old 13-09-2005, 10:20   #4
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NOTHING should be used on fuel line threads.

Most boat builders use cheapy 'compression' fittings that are quite inferior to a standard flared union. Normal vibrations, etc. on a boat will cause the compression nut/ferrule inside a compression fitting to compress and deform the soft copper tube ... hence the leak and no matter how tight you run up the threads. Actually such compression fittings are for ONE TIGHTENING ONLY and should be replaced every time you loosen a fitting - the tube should be cut and a new compression ferrule installed.

Flared fittings (double flared is preferred) using stainless steel tube is the SAFE way to make such a connection. Flare tools are cheap - just takes some 'expertise' to use one.

FYI - copper is INCOMPATIBLE with fuel oil - it accelerates the 'ageing' process of the oil.

hope this helps.
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