Fix a Dripping Faucet: Repairing Water Intake Leaks & Worn Seals
About This Project
This project details how to fix a dripping faucet. The first step is to turn off the water supply using the shut-off valves under the sink or the main water supply. Next, plug the drain and disassemble the faucet handle by removing the decorative cap and handle screw. After disassembling the handle, replace any worn O-rings or seals on the valve stem with new ones from a repair kit, ensuring they fit snugly. Finally, reassemble the faucet, tighten all connections, and slowly turn the water back on while checking for leaks. If leaks persist, re-tighten or check for any improperly seated O-rings.
Best for homeowners and DIY enthusiasts.
Tools & Materials
30 in. Steel Sprinkler Valve Key 410-406-0111
Screwdriver
Everbilt Sink Stopper for 3-Bolt Garbage Disposals in Black Plastic 22-0001F-00
DANCO 200-Piece O-Ring Kit 34443
Oatey 1 oz. Plumber's Grease 30620
30 in. Steel Sprinkler Valve Key 410-406-0111
This is a Sprinkler Valve Key Wrench. It is used for turning off and on manual sprinkler control valves. It is most commonly used with in ground lawn sprinkler systems.
Screwdriver
A tool used to turn screws.
Everbilt Sink Stopper for 3-Bolt Garbage Disposals in Black Plastic 22-0001F-00
Durable black plastic sink stopper will stop water and unwanted items from entering your disposer. Fits standard 3-1/2 in. sink drains. Easy to insert and remove from your drain.
DANCO 200-Piece O-Ring Kit 34443
O-rings get lost periodically and get warped/worn out over time. A damaged O-ring,(or no faucet O-ring, at all) means a poor seal, leading to a leaky mess. Always have a spare O-ring on hand! Faucet O-rings
Oatey 1 oz. Plumber's Grease 30620
A special combination of lithium soaps, solvent refined base stocks and additives. Formulated for many plumbing applications. Makes hard turning faucets work smoothly.
Steps
Turn Off the Water Supply
5 minsBefore you begin, safety first! Turn off the water supply to the faucet. Locate the shut-off valves under the sink (usually one for hot and one for cold water). Turn the valves clockwise until completely closed. If you can't find the valves or are unsure, turn off the main water supply to your house.
Watch: Turn off water supply
Disassemble the Faucet Handle
10 minsProtect your sink! Plug the drain to prevent losing small parts. Carefully disassemble the faucet handle. Start by removing any decorative caps using your fingers or a small flat-head screwdriver. Then, locate and remove the screw(s) holding the handle in place, using the appropriate screwdriver. Some handles might simply pull off after cap removal.
Watch: Disassemble Faucet Handle
Replace the O-rings and Seals
15 minsInspect the O-rings and seals on the valve stem carefully. Replace any that are worn, damaged, brittle, or cracked. Use a small screwdriver or needle-nose pliers to remove the old ones. A faucet repair kit will have suitable replacements. Make sure the new O-rings fit snugly into their grooves.
Watch: Install New Seals and Packing Nut
Reassemble and Test
10 minsCarefully reassemble the faucet, reversing the disassembly steps. Tighten all connections securely. Slowly turn the water supply back on and closely inspect all connections for any leaks. If leaks persist, re-tighten connections or check for improperly seated O-rings.
Watch: Reassemble and Test FaucetCommon Problems
Double-check that the water is completely shut off by trying to turn on the faucet. If water still comes out, the valves may be faulty and need to be replaced.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
If you can't find your main water valve, you can contact your water company for help.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
Damaging the faucet handle when attempting to remove the cap.
Solution: Use the small notch on the side of the cap to easily pry it off without damaging the handle.
Over-tightening faucet collars can strip threads or crack the faucet body.
Solution: Hand-tightening the collar should be sufficient. Over-tightening with a tool can damage the threads or the faucet body.
Failure to properly lubricate the O-rings can cause them to pinch or tear during reassembly, which will result in the faucet leaking again.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
Avoid overtightening the plastic packing nut to prevent it from cracking.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
The new gasket doesn't fit due to its shape.
Solution: The new packing gasket may be cylindrical, unlike the old concave one. This is normal, as it will conform to the correct shape when tightened.
Frequently Asked Questions
Why is a "30 in. Steel Sprinkler Valve Key" listed as a required tool for a faucet repair? It seems very long for under-sink work.
The 30 in. Steel Sprinkler Valve Key is typically for turning off main outdoor water supply valves, which might be necessary if your under-sink shut-offs don't work or are absent. However, for most faucet repairs, you'll primarily use the smaller shut-off valves located directly under the sink. Always confirm the correct water shut-off point for your specific setup.
My faucet is still dripping after replacing the O-rings and seals. What should I do next?
First, double-check that all connections are tightly secured but not overtightened, and ensure the new O-rings and seals are properly seated and are the correct size for your faucet model. If leaks persist, the valve seat itself might be worn and require replacement, or the faucet cartridge could be faulty, necessitating a different repair kit.
What are the most important safety precautions to take before starting this faucet repair?
Always turn off the water supply completely to prevent flooding, either at the specific faucet's shut-off valves or the main house supply. Plug the drain opening to avoid losing small parts like screws or O-rings down the drain, and consider wearing safety glasses to protect from potential splashing or debris.
How can I ensure this project really only takes about 2 hours and is beginner-friendly?
To stay within the estimated 2 hours, have your repair kit, tools, and a clear, well-lit workspace ready before you begin. Take photos during each step of disassembly to aid in reassembly, which is especially helpful for beginners. If you encounter unexpected difficulties like corroded screws, a quick online search for your specific faucet model can often provide targeted solutions.
What if I can't find replacement O-rings and seals specifically for my faucet model?
Many hardware stores carry universal O-ring and seal repair kits with a variety of common sizes; these often work well as replacements. If a universal kit doesn't have the right fit, take the old parts with you to the store to match them, or consult your faucet's manufacturer website for specific part numbers. Sometimes, replacing the entire faucet cartridge is an easier solution if individual seals are hard to find.
I'm having trouble disassembling the faucet handle or getting it off. What are some tips?
Faucet handles can sometimes be stuck due to mineral buildup or corrosion. Try applying a penetrating oil (like WD-40) and letting it sit for a few minutes before attempting to gently pry it off. Avoid excessive force, as this can strip screws or damage the handle; sometimes a specialized faucet handle puller tool is needed for very stubborn handles.
