Fuel tank gasket leak

[Lloyd Lind]

So it's leaking on this car after a year. I know it's the fuel having alcohol in it but has anyone found a solution to this problem. I use fuel injection gas hose at the back and the motor because of this but to my knowledge, no one has reproduced a fuel resistant tank gasket. Can I make one myself out of something? Any ideas?

[Chryco Psycho]

I have witnessed the new retainer rings not putting enough pressure against the gasket , do you have an original retainer ring / lock ring ?

[1 Wild R/T]

I have witnessed the new retainer rings not putting enough pressure against the gasket , do you have an original retainer ring / lock ring ?

This....

[Lloyd Lind]

I know about the rings and the one I choose fit very tight, but everytime I pull the sending units now the gasket is real slimy and swelled from the fuel, clearly the material ( rubber) is not fuel resistant. I just ordered three original Chrysler gaskets and I'm hoping they will fair better than the china ones made out of political dissidents or soybeans or something.....

[Chryco Psycho]

The original gaskets will be better but even 50 years ago there was no alcohol in the fuels

[GrandpaKevin]

I would try this gasket, this is a Mopar guy and he sells quality stuff.
https://www.ebay.com/itm/360751319879?rmvSB=true

And if you have any doubts about the lock ring buy the combo
https://www.ebay.com/itm/DMT-MOPAR-Stainless-Steel-Gas-Fuel-Tank-Sending-Unit-Lock-Ring-and-Seal/292114535875?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3Db166656ee27344078d94c8b217d5fad3%26pid%3D100005%26rk%3D1%26rkt%3D10%26sd%3D360751319879%26itm%3D292114535875&_trksid=p2047675.c100005.m1851

I usually bend the tabs up slightly on the retainer/lock ring and test fit, bending the tabs makes the ring fit much tighter especially when using aftermarket rings.

[RUNCHARGER]

Hmm: I use the original lock rings and have had good luck with the new seals, they would be easy to cut yourself if you could obtain the right material.

[MEK-Dangerous]

The Ethanol in fuel now takes a toll on rubber. If you have any rubber fuel lines in your engine bay, don't be surprised if they crack and spring a leak after only a few years.

[Lloyd Lind]

I saw those gaskets but they are made of nitrile, not rated very good for ethanol. The original ones were neoprene and rates way higher with ethanol I think the nitrile is the problem with my gasket that is in it now, it has turned in to greasy black gummy bears....just like nitrile gloves do if exposed to gas.