How to Identify and Fix a Leaking Flush Valve Seal > 자유게시판

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If your toilet keeps running or you notice water pooling around the base even after flushing, a leaking flush valve seal is likely the culprit. This small rubber or silicone component sits at the bottom of the tank and creates a watertight seal between the tank and the bowl. Over time, it can wear out, crack, or become misaligned, causing water to leak slowly into the bowl and waste water continuously. A compromised seal between the tank and bowl leads to silent water loss

To identify a leaking flush valve seal, start by turning off the water supply to the toilet and flushing it to drain most of the water from the tank. Then add a few drops of food coloring to the remaining water. Wait about 15 to 20 minutes without flushing. If colored water appears in the bowl, the flush valve seal is leaking. Another sign is hearing the toilet refill on its own after sitting idle for a while. Try the dye test during quiet hours to catch intermittent leaks

Once you confirm the leak, you can fix it yourself with a few basic tools. First, shut off the water at the wall valve and flush the toilet to empty the tank. Use a sponge or towel to soak up any remaining water. Disconnect the water supply line and 横浜市でのトイレつまり解消・水漏れ修理 remove the nuts holding the tank to the bowl. Carefully lift the tank off and set it aside on a towel. Support the tank with both hands to avoid stress on the bolts

Now you can see the flush valve seal. It’s the large rubber ring that sits on top of the flush valve body. Remove the old seal by gently pulling it off. Take the old seal to a hardware store to find an exact replacement, or check your toilet’s model number to order the correct part. Clean the area where the seal sits with a soft cloth and mild cleaner to remove any debris or mineral buildup. The seal may also be called a flange gasket or tank-to-bowl gasket

Place the new seal onto the flush valve, making sure it’s centered and sits flat. Reinstall the tank by aligning the bolts with the holes in the bowl and tightening the nuts evenly—do not over tighten, as this can crack the porcelain. Reconnect the water supply line, turn the water back on, and let the tank refill. Check for leaks around the base and listen for any unusual sounds. If the toilet stops running and no water leaks from the tank to the bowl, the repair is complete. Use a torque wrench if available to avoid excessive pressure

Replacing the flush valve seal is a simple task that can save hundreds of gallons of water each year and reduce your utility bill. Doing it yourself also avoids the cost of a plumber. Make sure to check the seal every couple of years for signs of wear, especially in areas with hard water, to prevent future leaks. Regular inspections every 12–24 months extend the life of your toilet components