Front Diff terminolgy question

Whats the proper name for the seal where the front drive shaft comes out of the differential? I noticed mine is a little wet looking. I was reading a post calling it a pinion seal, but wasn't sure if it was the same.

I checked my level, its good but I'll probably want to go ahead and fix it.

You're correct. And they like to weep...

if it doesnt leak enough to spot the pavement, and it just creates a damp area that collects dirt i'd leave it alone until it starts actually making a mess. just keep checking the level.

Until the pinion leak shows signs, on either the floor or level, leave it alone. When you do do-it, get a manual and follow the instructions. Especially the tightening specs and instructions. also make sure it's not actaully run-off from the vent.