Understanding plumbing can sometimes feel like navigating a maze, especially when dealing with seemingly simple components like wax rings. The efficiency of your toilet, a fixture often manufactured according to standards set by organizations like ANSI, hinges significantly on the correct installation and choice of its constituent parts. Home improvement projects frequently require the use of tools such as a plunger to ensure proper drainage after installation. Selecting the right wax ring for toilet sizes is crucial for preventing leaks and maintaining a functional bathroom. For example, a mismatch in size can quickly lead to water damage that requires the professional touch of a plumber.

Image taken from the YouTube channel Aaron’s Test Lab , from the video titled Replacing a Toilet Wax Ring With an Incorrect Flange Height .
The Unsung Hero of Your Toilet: Why Wax Ring Size Matters
The toilet wax ring: it’s a small, inexpensive component, yet absolutely critical to the proper functioning of your bathroom. Tucked away out of sight, this unassuming circle of wax forms a vital watertight seal between the base of your toilet and the drainpipe, preventing leaks and the associated headaches they bring. Choosing the correct size wax ring is paramount, as an improperly sized one can lead to a cascade of problems, from unpleasant odors to significant structural damage.
The Wax Ring’s Essential Role
At its core, the wax ring serves as a gasket. It’s compressed between the bottom of the toilet and the toilet flange (the connecting piece on the drainpipe). This compression creates an airtight and watertight barrier, ensuring that all waste and water flow directly into the drain, rather than seeping onto your bathroom floor.
Without a properly functioning wax ring, you’re essentially leaving your bathroom vulnerable to leaks. These leaks can range from a slow, insidious drip to a more noticeable puddle around the base of the toilet.
The Price of Incorrect Sizing: More Than Just a Mess
Selecting the appropriate size wax ring is not merely a matter of convenience; it’s an exercise in preventative maintenance. An undersized ring might not fully bridge the gap between the toilet and the flange, leading to an incomplete seal and, predictably, leaks.
Conversely, an oversized ring might not compress properly, also resulting in a faulty seal.
The consequences of these leaks can be far-reaching. Water damage can warp flooring, ruin drywall, and even compromise the structural integrity of your home. Moreover, the constant presence of moisture fosters the growth of mold and mildew, posing health risks and creating unpleasant odors.
Beyond the immediate damage, a faulty wax ring can also lead to increased water bills and the cost of professional plumbing services to address the underlying issue and repair the damage. Ignoring a small leak now can translate into a much larger expense later.
Therefore, understanding the importance of selecting the correct wax ring size is the first step in maintaining a healthy, dry, and worry-free bathroom.
Understanding Your Toilet’s Sealing System: The Key Components
As we’ve seen, a properly sized wax ring is essential to prevent leaks. However, to truly understand the critical role the wax ring plays, it’s important to understand the larger system it’s a part of: the toilet’s sealing system. This system is comprised of several key components working in harmony, and each plays a crucial role in ensuring a watertight connection. Let’s examine these components in detail: the toilet flange, the toilet bowl, and the toilet drain.
The Toilet Flange: The Foundation of the Seal
The toilet flange is arguably the most critical component aside from the wax ring itself. It’s a circular fitting, typically made of metal or PVC, that’s secured to the floor and connected to the drainpipe below.
Think of the flange as the anchor point for your toilet. It provides a stable and level surface for the toilet bowl to rest upon. Crucially, it also incorporates bolt slots or holes. These allow you to securely fasten the toilet to the floor, compressing the wax ring between the bowl and the flange.
The integrity of the flange is paramount. A cracked, damaged, or improperly installed flange can compromise the entire sealing system, regardless of the wax ring’s quality or size.
The Toilet Bowl: The Fixture and the Interface
The toilet bowl serves as the primary fixture for waste collection and flushing. However, it’s also a vital part of the sealing system.
The base of the toilet bowl is specifically designed to sit flush (or as close to flush as possible) against the floor and the flange. A horn or outlet is located on the underside of the toilet. It aligns directly with the flange opening to direct waste into the drain.
The wax ring is positioned between this outlet and the flange, effectively bridging the gap and creating a seal. The weight of the toilet, combined with the bolts securing it to the flange, compresses the wax ring. This, in turn, creates the necessary watertight connection.
The Toilet Drain: Waste Disposal and System Connection
The toilet drain is the pipe that carries waste away from the toilet and into the main plumbing system.
It’s directly connected to the toilet flange. Therefore, the flange must be properly aligned with the drainpipe to ensure unobstructed flow.
The drain’s primary function is waste removal. But it’s intrinsically linked to the sealing system. Any backpressure or blockage in the drain can put undue stress on the wax ring. It can potentially compromise its seal over time.
Ensuring proper ventilation and drain maintenance is crucial for the longevity of the entire system. This prevents pressure build-up and ensures effective waste disposal.
Wax Ring Options: Finding the Right Fit for Your Needs
Knowing the components of your toilet’s sealing system is only half the battle. The other half is choosing the right wax ring for your specific setup. While seemingly simple, wax rings aren’t a one-size-fits-all solution. Several options exist, each designed to address particular installation scenarios. The two most common are standard and extra-thick wax rings, but increasingly, wax-free alternatives are gaining traction. Let’s explore these options to help you make an informed decision.
Standard Wax Ring
The Go-To Choice for Typical Installations
The standard wax ring is the most common and widely used option.
It’s a simple ring of wax, typically around 1 inch thick, designed to create a watertight seal between the toilet bowl and a standard-height flange that’s flush with the floor.
These rings are readily available at any hardware store and are generally inexpensive.
Ideal Scenarios for Standard Rings
Standard wax rings excel in situations where the toilet flange is level with the finished floor and in good condition.
If the flange sits properly and isn’t damaged, a standard ring will usually provide a reliable seal.
These are also a good choice when replacing an old wax ring in a standard installation that hasn’t previously experienced leaks.
In these scenarios, the standard ring provides sufficient compression to create a watertight seal without being excessively thick.
Extra Thick Wax Ring
Bridging the Gap Where Others Can’t
Extra-thick wax rings, as the name suggests, offer increased thickness compared to their standard counterparts.
These rings are designed to compensate for larger gaps between the toilet bowl and the flange, typically arising from either a recessed flange or an uneven floor.
They provide more material to compress, ensuring a solid seal even when the connection isn’t perfectly flush.
When to Choose an Extra-Thick Ring
An extra-thick ring is necessary when the toilet flange sits below floor level.
This situation often occurs when new flooring is installed on top of existing flooring, effectively raising the floor height relative to the flange.
They are also useful if the flange itself is damaged or uneven, preventing the toilet bowl from sitting flush.
Extra-thick rings can also be beneficial if the toilet bowl has minor imperfections or irregularities on its base.
The Potential Drawbacks of Overdoing It
While extra-thick rings can be lifesavers in certain situations, it’s important to avoid using one unnecessarily.
Using a ring that’s too thick can prevent the toilet from sitting properly on the floor, leading to instability and rocking.
This instability can eventually damage the wax ring and cause leaks.
Furthermore, excessive compression can cause the wax to squeeze out from the sides, creating a mess and potentially compromising the seal.
Finding the right balance is key.
Wax-Free Alternatives
A Modern Take on Toilet Sealing
In recent years, wax-free toilet seals have emerged as a popular alternative to traditional wax rings.
These seals are typically made of rubber or foam and offer several potential advantages.
Reusability is a major benefit; unlike wax rings, wax-free seals can be removed and reinstalled without needing replacement.
This makes them ideal for situations where you might need to remove the toilet for repairs or renovations.
Additionally, they tend to offer a cleaner installation process, avoiding the sticky mess associated with wax.
Wax-free alternatives come in multiple sizes and styles, so proper measurement and installation are still required.
While they may cost more upfront, their reusability can make them a cost-effective choice in the long run.
With a grasp on the different wax ring options available, the next crucial step is determining which size is appropriate for your specific toilet installation. This isn’t a guessing game; accurate measurement is paramount to ensure a leak-free and stable toilet.
Measuring for Success: How to Determine the Correct Wax Ring Size
Selecting the right wax ring hinges on understanding the relationship between your toilet flange and the surrounding floor. The goal is to determine the vertical distance – or lack thereof – between the top of the flange and the bottom of the toilet bowl where it will make contact. In essence, you’re measuring the gap that the wax ring needs to fill.
Is Your Toilet Flange Level with the Floor?
The ideal scenario is a flange that sits perfectly flush with the finished floor. This usually indicates a standard installation where a standard wax ring will suffice.
However, determining if it’s actually level requires careful observation. Use a level across the diameter of the flange in multiple directions.
If the bubble indicates a level surface across all points, and the flange isn’t damaged, you’re likely in good shape for a standard-sized wax ring.
When the Toilet Flange is Below the Floor
More often than not, especially in older homes or after renovations, the flange sits below the finished floor. This creates a gap that a standard wax ring might not adequately seal.
The depth of this recessed flange is the most critical measurement you need to take. This will dictate whether you need an extra-thick wax ring or even a flange extender.
Measuring the Gap: A Step-by-Step Guide
Here’s how to accurately measure the distance between the flange and the toilet bowl’s base:
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Clear the Area: Remove any old wax, debris, or obstructions from the flange. A clean surface is essential for accurate measurements.
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Use a Straight Edge: Place a straight edge (like a ruler or a level) across the top of the toilet flange. Ensure it spans the entire diameter.
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Measure the Distance: Using a measuring tape or ruler, measure the vertical distance from the bottom of the straight edge to the floor. This measurement represents how far below the floor the flange sits.
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Account for Toilet Bowl Recess: This is where it gets slightly more nuanced. Some toilet bowls have a recess or indentation around the drain opening. You’ll need to account for this recess when calculating the total gap.
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Place the straight edge across the bottom of the toilet bowl, spanning the drain opening.
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Measure the distance from the straight edge to the surface that will contact the wax ring.
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Calculate the Total Gap: Add the flange depth (from step 3) to the toilet bowl recess depth (from step 4). This sum represents the total gap the wax ring must seal.
The Significance of Accurate Measurements
Accurate measurements are non-negotiable. Even a small miscalculation can lead to leaks, instability, and ultimately, water damage.
Think of the wax ring as a gasket; it needs to be compressed just enough to create a watertight seal, but not so much that it’s over-compressed and ineffective.
Negative Impacts of an Incorrectly Sized Ring
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Leaks: The most obvious consequence is water leaking around the base of the toilet. This can damage flooring, subflooring, and even lead to mold growth.
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Instability: An undersized wax ring won’t provide enough support, causing the toilet to wobble. This can eventually damage the flange and lead to further leaks.
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Sewer Gas Odors: A poor seal can allow sewer gases to escape into your bathroom, creating an unpleasant and potentially hazardous environment.
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Costly Repairs: Ignoring these problems can lead to significant water damage, requiring extensive and expensive repairs.
Therefore, taking the time to carefully measure the gap and select the correct wax ring size is an investment in preventing future headaches and protecting your home.
Troubleshooting Toilet Troubles: Common Problems and Their Fixes
A toilet leak can quickly escalate from a minor annoyance to a major headache, potentially causing significant water damage and costly repairs. While a faulty wax ring is often the culprit, it’s essential to accurately diagnose the problem before reaching for a replacement.
Common Causes of Wax Ring Failure and Associated Leaks
Several factors can contribute to wax ring deterioration and subsequent leaks.
Improper installation is a frequent offender. If the toilet wasn’t seated correctly during installation, or if the flange wasn’t clean and level, the wax ring may not have formed a complete seal from the start.
Toilet rocking is another common cause. Over time, a wobbly toilet can compress the wax unevenly, leading to cracks and leaks. This is often due to loose bolts connecting the toilet to the flange, or an uneven floor.
Old age and deterioration also play a role. Like any material, wax degrades over time, becoming brittle and losing its ability to create a watertight seal.
Clogs and excessive plunging can also contribute to wax ring failure. Extreme pressure from plunging can sometimes disrupt the seal, particularly if the wax is already weakened.
Identifying a Wax Ring Leak: Recognizing the Signs
Detecting a wax ring leak early can save you from extensive damage. Look for these telltale signs:
Water pooling around the base of the toilet is the most obvious indicator. This water may be clean or slightly discolored, depending on the source of the leak.
A musty odor near the toilet base can indicate mold growth resulting from a slow, persistent leak. Even small amounts of moisture can create a breeding ground for mold.
Stains on the ceiling below the bathroom are a serious warning sign. This suggests the leak has been ongoing for some time and has penetrated the floor.
Loose or wobbly toilet. As previously noted, if the toilet can be easily rocked from side to side, this is a very good indication that the wax ring is no longer providing a secure seal.
Troubleshooting Steps Before Replacement
Before assuming the wax ring is the problem, try these troubleshooting steps:
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Check the toilet flange bolts. Ensure they are snug, but not overtightened. Overtightening can crack the toilet bowl or flange. A quarter turn past finger-tight is usually sufficient.
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Examine the water supply line. Make sure the connection between the water supply line and the toilet tank is secure and not leaking. Sometimes, water can trickle down and appear to be coming from the base of the toilet.
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Look for condensation. Condensation on the toilet tank can sometimes drip down and create a puddle that mimics a leak. Dry the tank thoroughly and see if the puddle reappears.
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Check for leaks from the tank A crack in the tank can create a slow leak that will show up on the floor.
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Use food coloring for leak detection. Add a few drops of food coloring to the toilet tank. Wait 30 minutes without flushing. If the colored water appears in the bowl, the flapper valve is leaking, not necessarily the wax ring, but it does indicate a leak.
If these steps don’t resolve the issue, the wax ring is likely the culprit.
When to Call a Plumber: Seeking Professional Help
While replacing a wax ring is a DIY project for many homeowners, there are situations where calling a plumber is the best course of action.
If you’re uncomfortable working with plumbing, or if you lack the necessary tools, it’s best to leave the job to a professional.
If you suspect significant water damage, such as rotted flooring or mold growth, a plumber can assess the extent of the damage and recommend appropriate repairs.
If the toilet flange is damaged or broken, a plumber can repair or replace it. This is a more complex job that requires specialized knowledge and tools.
If you’ve tried replacing the wax ring and the leak persists, there may be an underlying plumbing issue that requires professional diagnosis and repair.
In short, err on the side of caution and seek professional help when in doubt. A skilled plumber can quickly diagnose the problem and ensure a long-lasting solution, preventing further damage and costly repairs.
Wax Ring Replacement: A Step-by-Step Guide
Replacing a toilet wax ring might seem daunting, but with careful preparation and attention to detail, it’s a manageable DIY project. Think of the wax ring as the unsung hero, the silent guardian against leaks and water damage. A proper replacement ensures this essential component continues to do its job effectively.
This section provides a comprehensive guide, breaking down the process into easy-to-follow steps. We’ll cover everything from safely removing the old ring to properly seating the toilet with a new, secure seal.
Preparing for the Task: Tools and Safety
Before diving in, gather the necessary tools and prioritize your safety. This includes:
- A new wax ring (standard or extra-thick, based on your measurements)
- A putty knife or scraper
- An adjustable wrench
- A small bucket or container
- Gloves (essential for hygiene)
- Old towels or rags
- A toilet auger (optional, for clearing potential clogs)
- Safety glasses (to protect your eyes)
Turn off the water supply to the toilet at the shut-off valve, usually located near the base of the toilet. Flush the toilet to empty the tank and bowl as much as possible. Use a sponge or small bucket to remove any remaining water from the bowl. Disconnect the water supply line from the toilet tank.
Step 1: Removing the Old Toilet
Begin by removing the decorative caps covering the bolts at the base of the toilet. Using an adjustable wrench, carefully loosen and remove the bolts. Avoid excessive force, as these bolts can corrode and break.
With the bolts removed, gently rock the toilet from side to side to break the old wax ring’s seal. Lift the toilet straight up and carefully set it aside on some old towels or a protected surface. Be prepared for some residual water to spill out.
Step 2: Scraping and Cleaning the Flange
With the toilet removed, you’ll be faced with the old wax ring. Use a putty knife or scraper to carefully remove all traces of the old wax from both the toilet flange and the bottom of the toilet.
This step is crucial. Any remaining wax can prevent the new ring from creating a proper seal. Thoroughly clean the flange with a clean rag to ensure a smooth, even surface.
Inspect the flange for any damage, such as cracks or breaks. If the flange is damaged, consider replacing it or using a flange repair kit before proceeding.
Step 3: Installing the New Wax Ring
Now it’s time to install the new wax ring. There are generally two ways to do this:
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Affixing the Wax Ring to the Toilet: Place the new wax ring on the bottom of the toilet, centering it around the waste outlet. Press firmly to ensure it adheres securely.
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Affixing the Wax Ring to the Flange: Alternatively, you can place the wax ring directly onto the toilet flange, again ensuring it’s centered.
Some wax rings come with a plastic sleeve or horn. This sleeve is designed to help guide waste into the drainpipe. If your wax ring has a sleeve, it should face downwards, into the drain.
Step 4: Setting the Toilet and Securing the Seal
Carefully lift the toilet and align it with the flange bolts. Gently lower the toilet straight down, pressing firmly and evenly to compress the wax ring. Avoid rocking the toilet, as this can compromise the seal.
Once the toilet is seated, reinstall the bolts and washers. Tighten the bolts evenly, alternating between each side, until the toilet is snug against the floor. Do not overtighten the bolts, as this can crack the porcelain. A good rule of thumb is to tighten them until you feel slight resistance.
Step 5: Completing the Installation
Reconnect the water supply line to the toilet tank. Slowly turn the water supply valve back on and allow the tank to fill. Check for any leaks around the base of the toilet and the water supply connections.
Flush the toilet several times to ensure proper operation and check for any leaks that might not be immediately apparent.
If you notice any leaks, you may need to tighten the bolts slightly or, in severe cases, remove the toilet and start the process again with a new wax ring.
Replacing a toilet wax ring requires patience and attention to detail. By following these steps carefully, you can ensure a leak-free and properly functioning toilet. Remember, a well-sealed toilet is a crucial part of a healthy and well-maintained home.
Proactive Prevention: Ensuring a Long-Lasting Seal
Replacing a wax ring is a task most homeowners prefer to avoid repeating. While a proper initial installation is paramount, proactive measures can significantly extend the lifespan of your toilet’s seal, saving you time, money, and potential water damage down the line.
Let’s explore some key strategies for ensuring a durable and watertight connection.
Achieving a Durable and Watertight Seal
The foundation of a long-lasting seal lies in the installation process itself. Cutting corners here will invariably lead to problems sooner rather than later.
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Flange Integrity is Key: Ensure the toilet flange is in good condition. Cracks, breaks, or significant corrosion can compromise the seal, regardless of how well the wax ring is installed. If the flange is damaged, replace it before installing a new wax ring.
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Cleanliness is Non-Negotiable: Thoroughly clean the flange and the base of the toilet before installing the new wax ring. Remove any debris, old wax residue, or corrosion. A clean surface allows the wax ring to make optimal contact and create a tight seal.
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Proper Seating is Critical: When setting the toilet onto the wax ring, apply even pressure and avoid rocking or twisting the toilet. This can distort the wax and create weak spots in the seal. A gentle, firm, and straight downward motion is what you’re aiming for.
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Don’t Overtighten the Bolts: While a secure connection is essential, overtightening the bolts can crack the toilet bowl or the flange. Tighten the bolts evenly, alternating sides, until the toilet is snug against the floor. A good rule of thumb is hand-tighten plus a quarter turn with a wrench.
The Importance of Correct Installation and Regular Inspection
Beyond the initial installation, ongoing vigilance plays a crucial role in maintaining the integrity of the wax ring.
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Check for Leaks Regularly: Periodically inspect the area around the base of the toilet for any signs of water. Even small, seemingly insignificant leaks can indicate a failing wax ring. Early detection allows you to address the problem before it escalates into significant water damage.
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Monitor Toilet Stability: A wobbly or unstable toilet can put stress on the wax ring and cause it to fail prematurely. If you notice any movement, investigate the cause and correct it promptly. This may involve shimming the toilet base or tightening the bolts.
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Consider Routine Inspections: Incorporate a toilet inspection into your regular home maintenance routine. This allows you to identify potential problems early on, such as minor leaks, loose bolts, or signs of corrosion.
Identifying Early Warning Signs to Avoid Costly Repairs
Proactive identification of potential issues is key to preventing costly repairs.
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Musty Odors: A persistent musty odor in the bathroom, even after cleaning, can indicate a slow leak from a failing wax ring. The water can seep into the subfloor and create a breeding ground for mold and mildew.
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Visible Water Stains: Keep an eye out for water stains on the ceiling below the bathroom, or on the floor around the toilet base. These are clear indicators of a leak that needs immediate attention.
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Loose or Wobbly Toilet: As mentioned before, any instability in the toilet’s base can damage the wax ring over time. Address any wobbling or looseness promptly to prevent further issues.
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Difficulty Flushing: While not always related to the wax ring, difficulty flushing can sometimes indicate a partial clog in the drain line, which can put additional pressure on the seal.
By implementing these proactive prevention strategies, you can significantly extend the life of your toilet’s wax ring, ensuring a leak-free and worry-free bathroom for years to come. Remember, a little maintenance goes a long way in preventing costly repairs and potential water damage.
FAQs: Choosing the Right Wax Ring for Your Toilet
Here are some common questions about selecting the right wax ring for your toilet to ensure a proper and leak-free seal.
How do I know what size wax ring I need for my toilet?
Standard wax rings for toilet sizes typically work for most toilets. However, if your toilet flange sits below the floor, you’ll likely need an extra-thick wax ring or a wax ring with a plastic horn extension to create a good seal. Measure the distance between the top of the flange and the floor to determine the appropriate thickness.
What happens if the wax ring is too small?
If the wax ring is too small, it won’t properly seal the space between the toilet and the flange. This can lead to leaks, sewer gas odors, and water damage. Ensure you choose a sufficient wax ring for toilet sizes or consider stacking two standard rings (though this is generally not recommended).
Are there alternatives to traditional wax rings?
Yes, there are wax-free toilet seals available. These are often made of rubber or foam and can be easier to install and less messy than traditional wax rings. They are also reusable in some cases. When replacing your toilet and choosing a wax ring for toilet sizes, you should also consider wax-free options.
Can I reuse a wax ring after removing the toilet?
No, you should never reuse a wax ring. Once a wax ring has been compressed, it loses its ability to form a proper seal. Always replace the wax ring with a new one whenever you remove and reinstall your toilet to prevent leaks and other issues related to wax ring for toilet sizes.
Well, there you have it – a quick guide to help you choose the right wax ring for toilet sizes. Hopefully, you’re now better equipped to tackle that plumbing project! Good luck, and remember to check twice, install once. Happy flushing!