My kitchen sink has a Moen model 1225 faucet, like the one pictured: .
I replaced the O-rings because of a leak around the handle (not the nozzle).
I'm wondering if I installed the O-rings incorrectly or if my faucet (~16 years old) needs to be replaced? My region has very hard water. When installing the rings, I did try applying the silicone grease to them.
The leak has gotten worse after the replacing the rings. Many times a steady stream of water will run out of the handle, although sometime rotating the handle reduces this to a trickle.
Before originally installing the rings, I soaked the faucet parts in a diluted vinegar solution until most of the mineral build up flaked off.