Fuel tank leak

My fuel tank is leaking at the seal for the sending unit. I am planning on taking it apart and using a new seal and locking ring.

Do I put this back together dry or is there a sealer that people use on the seal during installation?

68 GTX. New tank but looks like older sending unit and collar.

I use just a tiny bit of grease to hold the gasket in place.Then install them.
Make sure the lock ring is a tight fit also.Rocky

Quote:

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I use just a tiny bit of grease to hold the gasket in place.Then install them.
Make sure the lock ring is a tight fit also.Rocky

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Thx