I installed a new kitchen faucet about 6 months ago. However, it no longer turns/swivels at the base. My non-expert inspection of the problem seems to suggest that the point-of-swivel has a build up of hard water or other kind of water-deposit. I believe the ring inside the unit is plastic.
I'm not at home at the moment, but from off the top of my head I believe this is the unit we purchased.
We did not use the horizontal base at the bottom, as we didn't have any soap--dispenser holes to cover (new granite counter tops).
Any idea on how to loosen this thing up? Right now it takes 2 hands to turn, and usually results in turning the whole unit instead of swiveling on the joint. My first inclination was to use WD-40 but I wasn't sure how that would work on plastic (seems like it could be damaging)