Persistent Fuel Leak - Sediment Bowl Inlet

[Mart]

Those are the ferrules that are part of the nut. Not the best. (in my opinion). Go to a good hardware store or ebay and get some 1/4" ferrules (we call them olives over here).
They will work with those nuts but proper ford nuts are better. Napa might have them. can't remember the number.

Glad you did get it to seal though. If done correctly they ought to be reusable multiple times.

Mart.