Fuel Resistant Gasket Maker or Material? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-04-2008, 06:48 PM
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Fuel Resistant Gasket Maker or Material?

Can anyone point me to a gasket material sheet or tube that is fuel resistant? I cannot seem to find a gasket sealer that says specifically that it is resistant to fuels. Plenty say resistant to oil or 'shop fluids'. But I am looking for something specifically to seal the lid of a fuel cell.

Thanks,
Jeff

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Old 05-04-2008, 07:40 PM
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You can buy "sheet neoprene" in different thicknesses. I looked into it a few years ago. I may have found it on google searches, or maybe even ebay.
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Old 05-04-2008, 10:08 PM
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Thanks. I will check that out.
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Old 05-07-2008, 01:23 AM
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A "real" auto parts store will have a selection of different gasket materials in sheets about the size of a sheet of paper. One of those should meet your needs. As far as sealers, the old Permatex products (#2, #3 Aviation, Super 300) are fuel-resistant, unless your fuel is alcohol.
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Old 05-07-2008, 10:06 PM
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Thanks. After I posted this I was thinking, heck I am sure there is some Permatex product that is fuel resistant. So I searched but couldn't find any. I will look for those products.

jeff
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Old 05-08-2008, 02:16 AM
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Permatex #2 is a pasty stuff that comes in a tube like toothpaste. It does stiffen up into a relatively non-gooey state. It never gets completely hard, just to the point that you can barely push a fingernail into it.

Permatex #3 is a thick liquid that comes in a plastic can with a brush under the lid. It's less stiff when it dries than the #2. You can paint some on a porous gasket, let it soak in for a few minutes, then paint a little more on just before installing the gasket. That gasket will peel off pretty much intact even years later, usually cleanly enough that another slathering will allow you to re-use the gasket for a few more years, as long as it's used on the same surface.

Neither is affected by gasoline, but either cleans off easily with alcohol.
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Old 05-08-2008, 07:00 AM
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I was just reading up on them. I think #2 is going to be the best for my application. Thanks a bunch. This does exactly what I was looking for.

Jeff
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Old 05-08-2008, 07:02 AM
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Permatex makes a product called "Right Stuff" that looks similar to silicone but needs no skin time and the parts can be put back into service immediately after assembly.
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Old 05-08-2008, 02:46 PM
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You can get Flourosilicone, or Buna-N through an industrial supply house.

But if this is for a fuel cell, why not just get in contact with a fuel cell manufacture to get the gasket from them?
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Old 05-08-2008, 05:01 PM
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I've used the Right Stuff. I didn't think it was fuel resistant though.

It's a custom cell so I have nobody I can turn to where their gasket would fit.

Thanks guys, the #2 should do the trick.

Jeff
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