2002 ford Ranger power steering

I have a truck that is leaking power steering fluid. I have change out the line from the bottom of the power steering fluid container, but i cant get it tight enough to stop leaking. I tighten it, and it stops for awhile then starts leaking again.

Does this line have an o-ring? If so the old one needs replacement. If not Teflon tape could help. You can’t use it on fuel lines, but oil lines are OK.