Stop the leak

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Jim Cooper

Senior Member
Joined
Jul 9, 2015
Messages
177
Location
US
Vessel Name
Tuna Talk
Vessel Make
CC Tournament 30
I have a Moeller plastic fuel tank in my skiff - fill, vent and sending unit located on top which I believe are leaking rain water. Anyone know of a spray sealant which is impervious to gasoline I can use to seal the connections?
 
Jim Cooper said:
I have a Moeller plastic fuel tank in my skiff - fill, vent and sending unit located on top which I believe are leaking rain water. Anyone know of a spray sealant which is impervious to gasoline I can use to seal the connections?
Click to expand...

Another product , called Seal-All
Is impervious to gasoline. Comes in a tube.
 
I saw the seal-all along with permatex permaseal but they both come in a tube. I was hoping to find a spray product.
 
Are you saying the gasket is leaking? Change the gasket.
Or is a fitting leaking? You can use a wicking Loctite.
 
Sea-All does seal gasoline, you can buy at Home Depot.
It will also glue down small pieces of wood veneer.
 
Jim Cooper said:
I have a Moeller plastic fuel tank in my skiff - fill, vent and sending unit located on top which I believe are leaking rain wate.
Click to expand...

If fittings or screwed top plate are leaking, then remove, change seal and/or apply gasoline-resistant sealant and refit. I would not place much faith in persuading a spray-on sealant to stick to the waxy plastic that most gas tanks are made of.
 
I'm going to remove the fill flange, pick-up & vent fittings and sender plate from the tank and then reinstall using the seal-all or permatex permaseal product. The flange and fittings have o-ring gaskets which I suspect are the culprit so I'll replace them also. I'd like to use an epoxy cabosil mixture as a sealant but there is too much flexing of the plastic tank and I only see that seal bond cracking/separating over time. I think a flexible sealant is my only option.
 
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