Why does my Delta kitchen faucet spout leak between the end of the spout and the aerator?

Question

The aerator is as tight as can be and I'll even loosen it a bit, but it still leaks when the water is on. I've tried both metal and rubber or palstic type swivel aerators.

Answer 1

I lot of these faucets have a rubber gasket that fits inside the spout, on top of the aerator to prevent leaks. Yours may be missing. If your water is hard the minerals will plug the screen and cause a very slow flow as well, but if you have tried several types that probably is not the problem. I lean towards the gasket missing or possibly the gasket being deformed for some reason.