MF Fuel Filter Air Bleed leaking from nut

[masseytx]

I bled the system of air not long ago, and the air vent on the first fuel filter seems to have a very slow seeping leak. Its absolutely tight, but still no luck.

Do these have any kind of small gasket or could some crud have gotten stuck in there?

 

[masseytx]

For that lone user who has the same question years down the road....

Looks like it has (had) a small ring gasket, but it was finished. The nut can't be taken out without removing the whole filter assembly on the 250, so I tried splitting another ring gasket and slid it in, but it still leaked (less though). Finally used no gasket and its so far leak free. For now.