How to Change a Toilet Tank Gasket (Step-by-Step Guide)

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How to Change a Toilet Tank Gasket

Your toilet tank gasket is a vital part of your toilet’s plumbing system. It creates a seal between the tank and the bowl, preventing water from leaking out. Over time, the gasket can wear out and become damaged, causing leaks. If you notice water leaking from your toilet tank, it’s a sign that the gasket needs to be replaced.

Changing a toilet tank gasket is a relatively simple task that can be completed in about 15 minutes. However, it’s important to follow the steps carefully to avoid damaging your toilet.

In this article, we’ll walk you through the process of changing a toilet tank gasket. We’ll provide step-by-step instructions, as well as tips and tricks to help you get the job done quickly and easily.

So if you’re ready to learn how to change a toilet tank gasket, read on!

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Step Instructions Image
1 Turn off the water supply to the toilet.
2 Remove the old gasket.
3 Apply a thin coat of plumber’s putty to the new gasket.
4 Install the new gasket.
5 Turn the water supply back on.

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A toilet tank gasket is a rubber ring that seals the connection between the toilet tank and the bowl. Over time, this gasket can wear out and leak, causing water to drip into the bowl. If you notice that your toilet is running constantly or that there is water pooling under the toilet, it is likely that the tank gasket needs to be replaced.

This is a relatively simple DIY project that can be completed in about 30 minutes. However, it is important to follow the steps carefully to avoid damaging the toilet.

Tools and Materials Needed

  • Adjustable wrench
  • Flat-head screwdriver
  • New toilet tank gasket
  • Plumbing putty
  • Penetrating oil

Steps to Replace the Toilet Tank Gasket

1. Turn off the water supply to the toilet. This is usually located on the back of the toilet tank.
2. Flush the toilet to drain the water from the tank.
3. Remove the old tank gasket. There will be two bolts on the back of the toilet tank that hold the tank to the bowl. Use the adjustable wrench to loosen these bolts and remove the tank.
4. Carefully lift the tank off of the bowl. There may be some water trapped in the tank, so be careful not to spill it.
5. Remove the old tank gasket. The gasket is a rubber ring that is located around the edge of the tank. It may be stuck to the tank or the bowl, so you may need to use a flat-head screwdriver to pry it loose.
6. Apply a thin layer of plumbing putty to the new tank gasket. This will help to create a watertight seal.
7. Position the new tank gasket on the edge of the tank. Make sure that the gasket is centered and that it is the correct size.
8. Carefully lower the tank onto the bowl. Make sure that the tank gasket is properly seated in the groove around the edge of the bowl.
9. Tighten the bolts on the back of the tank to secure it in place.
10. Turn the water supply back on to the toilet.
11. Flush the toilet to check for leaks.

If you have any trouble replacing the toilet tank gasket, you can always call a professional plumber for help.

Replacing the toilet tank gasket is a relatively simple DIY project that can save you money on a plumber’s bill. By following these steps, you can easily extend the life of your toilet and ensure that it is functioning properly.

How To Change Toilet Tank Gasket?

Changing a toilet tank gasket is a relatively simple task that can be completed in a few minutes. However, it is important to follow the steps carefully to avoid damaging the toilet.

What You Will Need

  • New toilet tank gasket
  • Replacement wax ring
  • Penetrating oil
  • Adjustable wrench
  • Pliers
  • Flathead screwdriver

Step 1: Turn off the Water Supply to the Toilet

The first step is to turn off the water supply to the toilet. This can be done by finding the water supply valve located under the sink or behind the toilet. Turn the valve clockwise until it is completely closed.

Step 2: Flush the Toilet to Drain the Water from the Tank

Once the water supply is turned off, flush the toilet to drain the water from the tank. This will make it easier to access the tank and replace the gasket.

Step 3: Remove the Old Gasket

The old gasket is located at the bottom of the toilet tank, where it seals the tank to the bowl. To remove the gasket, you will need to use a flathead screwdriver to pry it loose. Be careful not to damage the toilet bowl.

Step 4: Apply Penetrating Oil to the Wax Ring

The wax ring is located at the bottom of the toilet bowl, where it seals the toilet to the floor. To make it easier to remove the wax ring, apply a generous amount of penetrating oil to the ring. Allow the oil to soak in for a few minutes.

Step 5: Remove the Wax Ring

Once the penetrating oil has had time to soak in, you can remove the wax ring. To do this, you will need to use a pair of pliers to grip the ring and twist it counterclockwise. Be careful not to damage the toilet bowl.

Step 6: Install the New Gasket

The new gasket is a thin, rubber ring that seals the tank to the bowl. To install the gasket, simply place it around the bottom of the tank and press it into place.

Step 7: Install the Wax Ring

The wax ring is a round, white ring that seals the toilet to the floor. To install the wax ring, you will need to apply a thin layer of petroleum jelly to the ring. Then, place the ring around the bottom of the toilet bowl and press it into place.

Step 8: Turn on the Water Supply to the Toilet

Once the new gasket and wax ring are installed, you can turn on the water supply to the toilet. Flush the toilet to make sure that the new gasket is properly sealing the tank to the bowl.

Changing a toilet tank gasket is a relatively simple task that can be completed in a few minutes. By following these steps, you can ensure that your toilet is properly sealed and functioning properly.

Here are some additional tips for changing a toilet tank gasket:

  • Make sure to use the right size gasket for your toilet. The gasket should be the same size as the opening in the tank.
  • Be careful not to damage the toilet bowl or tank when removing the old gasket.
  • Apply a generous amount of penetrating oil to the wax ring to make it easier to remove.
  • Make sure the new gasket is properly seated in the tank before turning on the water supply.

By following these tips, you can easily change a toilet tank gasket and keep your toilet in good working order.

How do I know if my toilet tank gasket needs to be replaced?

There are a few signs that your toilet tank gasket may need to be replaced. These include:

  • The toilet is leaking from the bottom of the tank.
  • The water level in the tank is constantly low, even after you’ve flushed the toilet.
  • The toilet is making a gurgling or whistling noise when you flush it.
  • The toilet bowl is not filling up all the way when you flush it.

If you notice any of these signs, it’s a good idea to have the gasket replaced as soon as possible. A leaky gasket can waste water and cause damage to your toilet.

How do I replace a toilet tank gasket?

Replacing a toilet tank gasket is a relatively simple task that can be completed in about 15 minutes. Here are the steps involved:

1. Turn off the water supply to the toilet.
2. Flush the toilet to empty the tank.
3. Remove the old gasket.
4. Apply a thin coat of plumber’s putty to the new gasket.
5. Position the new gasket over the overflow pipe.
6. Secure the gasket in place with the bolts that hold the tank to the bowl.
7. Turn on the water supply to the toilet.
8. Flush the toilet to test the new gasket.

What tools do I need to replace a toilet tank gasket?

You will need the following tools to replace a toilet tank gasket:

  • A screwdriver
  • A pair of pliers
  • A putty knife
  • Plumber’s putty

How much does it cost to replace a toilet tank gasket?

The cost of replacing a toilet tank gasket will vary depending on the type of gasket you need and the location of your home. However, you can expect to pay anywhere from $5 to $20 for a new gasket.

Can I replace a toilet tank gasket myself?

Yes, you can replace a toilet tank gasket yourself. However, it is important to follow the steps carefully to avoid damaging the toilet. If you are not comfortable doing this yourself, you can hire a plumber to do the job for you.

What are the benefits of replacing a toilet tank gasket?

There are several benefits to replacing a toilet tank gasket, including:

  • Reduced water waste. A leaky gasket can waste up to 200 gallons of water per day. Replacing the gasket can help to save water and money.
  • Improved performance. A new gasket can help to improve the performance of your toilet. The toilet will flush more efficiently and will not leak.
  • Increased lifespan. A new gasket can help to extend the lifespan of your toilet. By preventing leaks and keeping the toilet in good working order, you can save money on repairs and replacements.

    Changing a toilet tank gasket is a relatively simple task that can be completed in just a few minutes. By following the steps outlined in this guide, you can easily replace your old gasket and ensure that your toilet is functioning properly.

Here are the key takeaways from this guide:

  • The toilet tank gasket is a critical part of your toilet that prevents leaks.
  • If your toilet is leaking, the most likely cause is a faulty gasket.
  • Replacing a toilet tank gasket is a simple task that can be completed in just a few minutes.
  • By following the steps outlined in this guide, you can easily replace your old gasket and ensure that your toilet is functioning properly.

Author Profile

Liana Farrell
Liana Farrell
Liana Farrell is the owner of toiletty.com. She is a mom of two and is very passionate about home improvement.

Liana has ten years of home improvement experience, and in her own words, she said: “I love improving the home, and I’m very passionate about keeping the home in the best possible condition. I love it!”

Liana Farrell balances beauty and functionality when she goes about her home improvement jobs.