faucet partsFixing a leaking faucet takes a little know how on how they control the flow of water. For a single handle faucet, you will have a cartridge that gets replaced. For a two-handle faucet, there is a stem and a seat. If you replaced the stem, I would look to either replacing the seat or resurfacing it.

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The seat acts like a base upon which the stem rests against. To allow the water to flow, the stem moves and allows water to pass. Stopping the flow of water happens when the stem contacts the seat and stops the water…except when the seat is pitted.

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You can replace the seat with a seat wrench. Stick the wrench into the seat and unscrew it. This isn’t as easy as it might sound, as you probably will need some elbow grease to loosen it. Take the seat with you to get a new one and reinstall it.

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Your other option is to resurface the seat. You can buy a seat dressing tool which slides down the opening and contacts the seat. On the end of the tool is an abrasive tapered end. As you turn the tool, it will slowly grind down the seat to remove the pits and uneven surface. In this way, the seat will have a smooth surface to seal out the water from flowing.

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