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Old 31 January 2016, 12:07   #1
gtflash's Avatar
Country: UK - England
Town: southampton
Boat name: TOP CAT 2
Make: Scorpion 8.1
Length: 8m +
Engine: 250hp HO
Join Date: Aug 2003
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Brass fuel threads

Need to extend a fuel filler neck. The connection to the tank looks brass and is externally threaded. Can I join brass fittings for petrol fuel and would I need some sort of jointing compound or fuel safe stuff to go on threads before.

Thanks gt

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Old 01 February 2016, 02:35   #2
Country: UK - England
Town: Retford
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Make: Mercury
Length: 3m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
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if the thread is BSP you should get something from a decent plumers failing that an hydraulic supplier they have large fittings for the fillers on oil tanks on hydraulic systems
or farm machinery suppliers

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Old 01 February 2016, 11:44   #3
Country: USA
Town: Oakland CA
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Plumbers putty (make sure it's safe for whatever fuel you're using - usually says on the container) is ideal. Avoid teflon tape. Many well stocked auto parts shops have fuel line sealant, which is, as far as I can tell, the same as plumbers putty for 3 times the cost.

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