Is inside seal tite flex considered to be a wet location? Liguidtight? Thanks could you provide the ref #

If a conduit is installed in a wet location, the inside of the conduit is also considered a wet location.
This is according to the explanatory material in the NEC Handbook, under the definition of Location, Wet.

Someday it'll all be *W-2 {90°C wet} cable.

You'd have to seal that conduit appropriately(sp?) wouldn't you?.
With it being a Damp location?.