A toilet tank gasket is the rubber seal that sits between your toilet tank and bowl. A leaking gasket can drip water all over your bathroom, causing lots of damage and costly repairs. The good news is that repairing a toilet tank gasket is a relatively simple task that you can do in an afternoon.
Instructions
1. Turn off the water supply to the tank. This valve is usually located under the tank on the wall.
2. Flush the toilet to empty the water from the tank. Use the sponge and towels to absorb and remove any remnants of water inside the toilet tank.
3. Unscrew the water supply hose from the bottom of the toilet tank.
4. Unscrew the bolts that hold the tank to the bowl. The nuts are on the underside of the tank. On some models, the bolts in the tank will have screw heads, allowing you to use a screwdriver to keep the bolt in place while you remove the nut with a wrench.
5. Spread out some towels on the floor. Gently pull the tank off the toilet bowl once the nuts are removed. Turn the tank over and rest it on the towels to avoid scratching the porcelain.
6. Find the tank gasket (also called the cone gasket). This is the (usually) black piece of rubber sticking out of the bottom of the tank. Push it up, so that it falls back into the tank.
7. Turn the tank back over. Remove the old gasket. Elevate the tank a little so that the bottom is not next to the floor. This will give you room to push the new gasket through. Attach the new gasket by pushing it through the tank outlet hole. Make sure that it has a nice, tight fit.
8. Replace the tank on the bowl. Thread the bolts back through the tank and secure them.
9. Replace the water hose. Put a dab of plumber's goop or use plumber's tape to ensure a water-tight fit.
10. Turn the water supply back on. Allow the tank to fill. Flush and check for leaks.
Tips Warnings
Apply bolt lubricant if the tank bolts are rusted and allow it to penetrate for 24 hours before unscrewing. You can also use a hacksaw to saw off any stubborn bolts. Replace any worn or rusted parts with new bolts, washers and nuts.
Be sure to keep plenty of towels and sponges on hand.
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