Fuel tank sender sealant ?
- Thread starter PDub
- Start date
Silicone's generally are NOT good with gasoline. Their is a good sealant called HYLOMAR that is, not sure if appropriate for your application, but I use it for intake manifold gaskets and it is very nice. A bit more expensive, but easy clean up and not a pain in the ass like some of the others. Also I have some from permatex (Aircraft style) that is gasoline resistant, but I like the Hylomar better. Might be called something else but available under the permatex brand as well.
Sandy
Sandy
I'd cut a gasket from rubber sheet...seen too many cork valve cover/intake gaskets leak.
MikeD
MikeD
You need to use Motoseal. A bit hard to find, but made for Gas.
Hylomar is 'Fuel Proof' as they say and is highly resistant to most chemicals, so I would expect a-o-k for fuel sensor gaskets. It is good stuff!
The funny thing is on the old 65 mustang, pulled the sender out of the original tank and the original cork (rubber impregnated) gasket was in fine shape after close to 40 years... Yes I would have replaced it if I kept the sketchy stock tank /ubbthreads/images/graemlins/smile.gif
Not that I think of it both the ATL and FuelSafe cells I have just have a cork gasket on the fuel level sensor, but I didn't install so I can't say what they used for gasket sealer if any.
The funny thing is on the old 65 mustang, pulled the sender out of the original tank and the original cork (rubber impregnated) gasket was in fine shape after close to 40 years... Yes I would have replaced it if I kept the sketchy stock tank /ubbthreads/images/graemlins/smile.gif
Not that I think of it both the ATL and FuelSafe cells I have just have a cork gasket on the fuel level sensor, but I didn't install so I can't say what they used for gasket sealer if any.
Paul I used rubber sheet from Woolies (that is Woolies on 01778 347347 - not Woolworths!). Not sure it is butyl but it has been fine for several years now.
I tried to be clever and fit some tank breathers at the back because of hot air pressure that does build if the car is facing downhill on a hot day. I was not the first to have fuel forcing its way out of the fuel fillers. These leaked on every acceleration. I put some vent tubes on them and now all is fine.
I tried to be clever and fit some tank breathers at the back because of hot air pressure that does build if the car is facing downhill on a hot day. I was not the first to have fuel forcing its way out of the fuel fillers. These leaked on every acceleration. I put some vent tubes on them and now all is fine.
Peter Delaney
GT40s Supporter
Paul, you might like to look at Loctite 567 (a white thread/flange sealant). I have used this throughout the car for fuel & water sealing, and have not had a single problem.
However, if you decide to change to rubber gaskets, be careful ! I have VDO senders that came with rubber gaskets, & I wacked on Loctite 515 (a metal flange sealant) only to discover that it provided a nice lubricant for the rubber gasket - as I tightened down the sender flanges, the rubber gasket simply squeezed out the sides - about 1/4" all round !. This lead to leaks, so I took them all apart, cleaned everything & refitted them with no sealant (as per VDO recommendations) - no leaks now. Trust me to fit first & ask questions later !!
Kind Regards,
Peter D.
However, if you decide to change to rubber gaskets, be careful ! I have VDO senders that came with rubber gaskets, & I wacked on Loctite 515 (a metal flange sealant) only to discover that it provided a nice lubricant for the rubber gasket - as I tightened down the sender flanges, the rubber gasket simply squeezed out the sides - about 1/4" all round !. This lead to leaks, so I took them all apart, cleaned everything & refitted them with no sealant (as per VDO recommendations) - no leaks now. Trust me to fit first & ask questions later !!
Kind Regards,
Peter D.
I have used Hylomar on homebuilt aircraft fuel tanks. Still no leaks after several years of exposure to Avgas. If making your own gasket, I would suggest Neoprene sheet.
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Loctite 567
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Thanks Peter, good to hear someone has had good success with this. I've noted this as I'm sure I'll need it as I progress through the rebuild. /ubbthreads/images/graemlins/smile.gif
Loctite 567
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Thanks Peter, good to hear someone has had good success with this. I've noted this as I'm sure I'll need it as I progress through the rebuild. /ubbthreads/images/graemlins/smile.gif
