Faucets can be easily installed and sealed with the used of plumber's putty. This useful and inexpensive tool can be purchased at a local hardware or home improvement store.
Tip #1 - Cleaning the Faucet
Before you begin to work with the plumber's putty, make sure the faucet and installation area that you are working with is thoroughly clean. Use a liquid soap and water solution to clean the faucet and the sink area. Dry everything completely once it is clean.
Tip #2 - Preparing the Plumber's Putty
Take a small amount of the putty from the packaging. Gently roll the putty in your hand. Continue rolling and manipulating the putty. The warmth from your hands and the movement of the putty will make the material soft and flexible. Roll the putty into a long, thin rope. Press the putty onto the bottom edge of the faucet.
Tip #3 - Positioning the Faucet
Position the putty-rimmed faucet into the sink deck and tighten the faucet installation nuts. There will probably be some excess putty that seeps out from the edge of the faucet unit. Carefully remove the excess putty with a rag and discard it. Once the faucet is properly installed wash the entire area again with warm soapy water and then dry it completely.