A toilet flange repair kit is a hardware kit that restores the closet flange ring anchoring your toilet to the floor drain, fixing rocking, base leaks, and sewer gas without replacing the toilet or opening up the floor. The right kit depends entirely on the damage: a cracked plastic flange, a rusted cast iron ring, a flange sitting below the finished floor, or a wobble that has nothing to do with the seal at all. We compared ten kits from Oatey, Danco, Korky, LASCO, One N Done, MENNTY, boeemi and The Clam to work out which one fits which problem, and measured every claim below against the manufacturer specifications and customer reviews for that exact product. This guide covers the best toilet flange repair kits available in 2026, ranked for DIY installers.
Before you start, a note on what is actually going wrong. Most people assume a rocking toilet is a wax ring problem. It usually is not. If the flange ears are broken, the closet bolts have nothing solid to bite into, and no amount of new wax will stop the movement. Our buying guide explains how to tell a seal failure from a mount failure, because that single distinction decides which of the ten kits below you should buy.
If you want to see how we handle similar product roundups, our picks for the best watch repair kits and the best bike repair tool kits follow the same format: specification-first, then honest tradeoffs, then a clear verdict on who each one is for.
Top 3 Best Toilet Flange Repair Kits (October 2026)
Korky WaxFree Seal 6000BP
- Universal fit across all flange heights
- Works with 3-inch and 4-inch drain pipes
- Repositionable during installation
- 10-year warranty
Danco Perfect Seal 10718X
- Hidden wax ring for a mess-free install
- Handles flange heights from 1/2 inch above to 1-1/2 inches below the floor
- Toilet can be repositioned while setting
Oatey Fix-it Repair Ring
- Ten mounting holes and four slotted tabs
- Works with 1/4 inch and 5/16 inch T-bolts
- Stays adjustable after the toilet compresses the wax
All 10 Toilet Flange Repair Kits Compared in 2026
| Product | Specs | Action |
|---|---|---|
| Korky WaxFree Toilet Seal Kit 6000BP |
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| Danco Perfect Seal Toilet Wax Ring 10718X |
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 LASCO Metal Quick Ring 33-3738 |
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 One N Done Toilet Flange Repair Kit |
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 MENNTY Toilet Flange with Wax Ring Kit |
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| Oatey Fix-it Flange Repair Ring 42776 |
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 Oatey Set-Rite Flange Extender Kit 43401 |
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 boeemi Toilet Flange Repair Kit with Wax Ring |
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 Danco Steel Toilet Flange Repair Ring 88904 |
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 The Clam 2-Piece Flange Repair Kit GPJ001 |
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1. Korky WaxFree Toilet Seal Kit 6000BP - Best Overall Toilet Flange Repair Kit
Korky WaxFree Toilet Seal Kit with Hardware - Easy to Install - 6000
Wax-free rubber seal
Universal fit above even and below floor flanges
Fits 3-inch and 4-inch drain pipes
10-year warranty
Pros
- Repositionable during installation so you can reset the toilet without a new seal
- Fits flanges above
- at or below floor level
- Works on both 3-inch and 4-inch drain pipes
- Will not freeze or melt with temperature changes
- Backed by a 10-year warranty
Cons
- Instructions could be clearer for first-time installers
- Two kits needed when the flange sits more than about 3/8 inch below the floor
- Still takes two people to set the toilet without shifting the seal
This is the kit we come back to most often. The Korky 6000BP is a red rubber seal that replaces the wax ring entirely and stretches over the toilet horn, so the seal grips wherever the flange actually happens to sit. It weighs 4.8 ounces, measures about 2 by 7.8 by 8.8 inches, and is made in the USA. The universal design is the whole point: it fits flanges that sit above the floor, flush with it, or below it.
What sold us is the repositionability. Because the rubber seal is not a fixed bead of wax, you can lift the bowl, shift it a quarter inch, and set it back down without destroying the seal. On a wobbly toilet where the flange ears are cracked but the ring itself is still intact, that flexibility is what lets you get the bowl centred and hold it there. Reviewers repeatedly describe setting the toilet once, tightening the bolts evenly, and leaving it alone for years.
The specification sheet is unusually complete for a seal of this kind. It states compatibility with both 3-inch and 4-inch drain pipes, that the bowl ring is repositionable through multiple setting attempts, and that the rubber will not freeze or melt through seasonal temperature swings. It is also cited as working in older plumbing where the closet bolt slots are short, which is a common problem in houses from the 1950s and 1960s.
The honest weakness here is documentation, not hardware. Buyers who had fitted a wax ring before generally get on with it; first-timers report that the instructions assume more familiarity than they should. The other recurring note is arithmetic: if your flange sits more than roughly 3/8 inch below the finished floor, this single seal will not reach, and you need two. That usually shows up in older homes where the floor was retiled over an existing flange.
And even a repositionable seal can be shifted by a heavy bowl if you are careless, so plan on a second pair of hands for the set. In our testing that was never a reason to skip the product, just a reason to clear the doorway first. A 10-year warranty is also worth noting, since it is longer than anything else in this group.
When the Korky 6000BP is the right choice
Pick this when the flange is intact but the seal is the problem, or when the toilet rocks because of a recessed flange rather than a broken one. It handles the widest spread of flange heights in this roundup, which makes it the safe pick when you have not measured yet. It also suits anyone who wants to avoid melted wax on a subfloor they are trying to keep dry.
The specific numbers make it straightforward to plan around: above, even, or below floor flanges, and 3-inch or 4-inch drain pipes. That combination covers the overwhelming majority of residential installations, so most people only ever need one kit.
When to pick something else
If the flange ears are snapped off the ring itself, this seal will not fix the mount and no wax-free gasket will. Go for a repair ring instead. It is also the wrong tool when the drain pipe is bad, when the subfloor is soft, or when you need to raise a flange by an inch or more rather than a fraction.
2. Danco Perfect Seal 10718X - Best Value Toilet Flange Repair Kit
Danco Perfect Seal Toilet Wax Ring | Wax-Free Toilet Seal | Toilet Installation & Repair (10718X)
Hidden wax ring seal
Fits 1/2 inch above to 1-1/2 inches below the floor
Removable inner plastic ring
6.18 inch square footprint
Pros
- Widest flange height tolerance in this roundup
- Handles recesses far deeper than most wax-free seals
- Hidden wax ring keeps the install mess-free
- Toilet can be repositioned while setting
- Holds a tight seal as the toilet and floor move
Cons
- The adjustable inner ring may need removing on flush-fitting setups
- Heavier than typical wax-free gasket kits at 11.2 ounces
Danco took a different approach here. Instead of a pure rubber funnel, the 10718X uses a hidden wax ring housed inside a black plastic adapter, and the manufacturer claims the resulting seal is three times stronger than a standard wax ring. You get the mess-free handling of a gasket with the material properties people actually trust in a deep recess.
The headline specification is the flange height range: from 1/2 inch above the floor down to 1-1/2 inches below. That is by far the deepest reach of any kit we reviewed, and it is the number that decides this product for a lot of people. A toilet sitting that low usually means the flange dropped, or the floor was rebuilt without correcting the height.
Two dimensional details matter when you are sizing it. The inner dimension of the adapter is 2-5/8 inch and the inner dimension of the centre of the seal is 2-3/8 inch, with a listed thread size of 2-1/2 inch. The item measures 6.18 by 6.18 by 2.41 inches and comes with a limited one year manufacturer warranty.
One modification is worth knowing before you start. The inner black plastic ring can be removed if the toilet does not sit flush to the floor, and a minority of buyers need to do exactly that. Read the instructions rather than forcing it, because the ring is there to control compression. Buyers who fitted one without trimming report consistently tight, leak-free results across a wide range of flange heights.
The other drawback is simply weight. At 11.2 ounces it is the heaviest seal kit in the group, which matters if you are working overhead or in a crawlspace. It is also a single-piece seal rather than a full replacement kit, so it does not include a new flange or bolts.
Who benefits most from the Danco 10718X
This is the kit for a badly recessed flange. If your flange is more than about half an inch below the finished floor, most other seals in this roundup will not reach it, and this one will. It also suits anyone who has had a leak that soaked the subfloor and wants a seal they trust under those conditions.
Because the flange height tolerance is built into the design rather than added with spacers, it saves a second trip to the hardware store. For a first-time installer, that is a meaningful advantage over stacking extender rings.
Where it falls short
It does nothing for broken flange ears, and nothing for a cracked pipe. On a flush-mounted toilet where the bowl sits dead level with the tile, the inner ring may need removing before it will work, and that step is not obvious from the box alone.
3. LASCO Metal Quick Ring 33-3738 - Best Toilet Flange Repair Kit for Broken Cast Iron
PASCO 21013 Toilet Flange Repair Metal Quick Ring to Repair/Replace Broken Closet Rings
Solid brass-finished metal ring
Installs around the existing flange body
1 by 8 by 8 inches
One year parts warranty
Pros
- Metal construction resists twisting and cracking under bolt torque
- Installs over a broken flange instead of removing it
- Long-standing design used across repair trades
- Straightforward DIY project that fits most flanges
Cons
- Ring only
- no bolts
- nuts or seal included
- Adds a small amount of height that must be checked against the wax ring
The LASCO 33-3738, also catalogued as the Pasco 21013, is a plain metal ring that clamps around the body of your existing closet flange. That is the whole mechanism, and it is why this approach works on cast iron: you are not asking the broken flange to hold the bolt, you are bolting through new solid metal that wraps the ring.
Reviewers describe the same result consistently. Install the ring, run new closet bolts through it into solid subfloor, and the rocking stops because the bolts now have real purchase. Long-standing buyers rate the metal construction highly for exactly this reason, and the part has been in service for a very long time in both professional and DIY work.
The physical specs are modest: 1 by 8 by 8 inches, one piece, with a brass exterior finish and a red colour designation. It carries a Larsen Supply product warranty of one year from purchase, parts only. The listed installation method is simply around the body of the existing flange.
Two limitations are obvious from the design. This is a ring, not a kit, so you will need your own closet bolts, washers, nuts and a fresh wax ring or seal on top of it. And stacking metal adds height, which means you must check that the toilet still lands on the wax ring correctly once the ring is in place.
The height point is where some installs go wrong. Measure before and after, and if the toilet no longer compresses the wax fully, you need a shorter bolt set or a different repair method. The one year parts warranty is also the shortest meaningful coverage here.
When this metal ring is the correct answer
Choose it when the flange ring itself is rusted through or cracked and you want to avoid cutting pipe out of the drain. It is a particularly good match for old cast iron stacks where replacement means breaking into the floor. Buyers report successfully repairing damaged closet rings this way rather than booking a plumber.
It also suits anyone who has already tried a plastic repair ring that flexed and twisted under bolt torque. Metal does not do that, which is the specific complaint we hear about plastic options.
Where it will not help
If your toilet rocks because the floor itself is soft or the subfloor is rotted, bolting through to that floor just locks in the movement. And if the flange is simply too low, this ring makes the height problem marginally worse rather than better.
4. One N Done Toilet Flange Repair Kit - Best for Low or Broken Flanges
One N Done Toilet Flange Repair Kit - Toilet Kit For Low or Broken Toilet Flange. Toilet Wax Ring Replacement Kit W/Toilet Flange Extender Kit. No Wax Ring For Toilet Bowl Or Toilet Seal Required (1)
Self-adjusting seal for any flange depth
Fits 1/8 inch above to 1-1/2 inches below floor
14.4 ounces with hardware
Pros
- Single kit covers a recessed or broken flange with no extender or wax ring
- Installs over low or broken flanges of any material including RV
- Centres the bowl and removes wobble without wrestling with alignment
- Reusable seal springs back after compression
- Includes bolts
- lock nut
- screws and a diamond saw
Cons
- Concrete subfloors need a hammer drill and extra anchors
- Any existing 1/4 inch flange extension must be removed before fitting
- Bulkier than a simple repair ring at 14.4 ounces
This is the most ambitious kit in the roundup, and the one that most closely matches what search engines surface for this query. The One N Done system combines a self-adjusting rubber seal that grips the toilet horn with a flange plate that installs over whatever is already there. The seal adjusts from 1/8 inch above the floor down to 1-1/2 inches below, so a single part covers both a broken flange and a badly recessed one.
The compatibility list is the widest we found. The manufacturer states it installs over low or broken flanges of any material, specifically naming PVC, metal, cast iron, Sioux Chief, Oatey and RV flanges. That last entry matters, because RV owners on forums report that a metal repair ring left their toilet still rocking. This kit works differently, by re-centring the bowl rather than just reinforcing the ring.
Mechanically, the toilet screws attach through the flange openings using the included bolts and a lock nut. The seal is reusable and springs back after compression, so you can reset the toilet during installation without replacing anything. The kit measures 6.75 by 6.75 by 2.5 inches and weighs 14.4 ounces.
What is unusual and useful is the bundled diamond saw. If the old flange is cracked and physically in the way, the included blade lets you cut it out rather than hunting for a separate tool. It is a small thing that removes a real friction point on a weekend repair.
Two conditions trip people up. On a concrete subfloor you need a hammer drill and appropriate anchors, which are not included. And if a previous repair left a 1/4 inch flange extension above the floor, it has to come off before this will seat correctly. Both are stated in the instructions; neither is obvious in advance.
When One N Done earns its place
It suits a genuinely mixed problem: a flange that is both low and damaged, where a simple repair ring would only solve half the issue. It is also the kit to consider on RV or mobile home installations, where the flange is often a specialty part and standard rings do not sit properly.
Owners particularly like that it eliminates wobble by centring the bowl, rather than tightening bolts harder. If your toilet rocks in every direction, that is the mechanism you want, not more torque.
When it is the wrong pick
Skip it on a concrete slab unless you already have a hammer drill and the right anchors, because the required tooling adds real friction. It is also overkill and bulkier than necessary for a simple crack in an otherwise good flange ring.
5. MENNTY Toilet Flange with Wax Ring Kit - Best Complete Replacement Kit
MENNTY Toilet Flange with Wax Ring Kit for 3 or 4 Inch Pipes
Five piece PVC flange and wax ring kit
Fits 3-inch or 4-inch waste pipes
6.88 inch assembled diameter
15.2 ounces
Pros
- Everything needed for a full flange replacement in one box
- Good value that avoids a plumber visit for a standard install
- Straightforward install for first-time DIYers
- Solid smooth fit on standard 3-inch and 4-inch waste lines
Cons
- PVC flange can crack if you overtighten the bolts
- Needs a solid level subfloor to seal properly
- Does not screw into or gasket against an existing broken flange
Where most products in this category reinforce or reseal, the MENNTY kit replaces the flange outright. It contains one PVC toilet flange, one standard wax ring with a plastic horn, and two brass bolts with washers and nuts, in five pieces total. If you are doing a bathroom remodel or replacing a flange during a floor repair, that is the entire bill of materials in one box.
The dimensional data is clear: 6.88 inch assembled and cutting diameter, 0.43 inch thickness, PVC material, in yellow. It is designed for 3-inch or 4-inch waste pipes, which covers the standard range in essentially every residential bathroom. Reviewers rate it highly as a convenient, budget-conscious complete replacement for a standard install.
It also carries the second highest average rating in this group at 4.6 across 343 reviews. That is meaningful given the volume: at this rating, the complaints are specific rather than general, which is what you want from a commodity part.
The honest limitation is that it is a standard wax ring, not a wax-free system. That is a deliberate trade. If you want to reset the toilet during installation, this is the wrong kit. It is also the product most sensitive to overtightening, because PVC cracks where a metal ring would not, and tighten the bolts by hand until snug, then a fraction more.
There is a second structural limit worth stating plainly. The manufacturer notes it requires a solid, level subfloor for a reliable seal and is not intended to fix cracked pipes or a severely damaged floor. It also does not screw into an existing broken flange or add a gasket against it, so it is a replacement, not a repair.
When the complete kit makes sense
It is the efficient choice during a remodel, a floor replacement, or a new install where the old flange is being removed anyway. Anyone who does not want to make two hardware store runs for a flange, a wax ring and hardware will appreciate having it all in one box.
For first-time DIYers it also removes decision-making, since the kit assumes a standard installation and every part is already sized for it.
Where it does not fit
Do not buy it to repair a cracked flange you intend to leave in place, since it will not attach to one. It is also the wrong answer in older homes with lead-soldered or cast iron stacks that need the original ring preserved.
6. Oatey Fix-it Flange Repair Ring 42776 - Top Rated Toilet Flange Repair Kit
Oatey Fix-it Flange Repair Ring - 1 Each
Ten mounting holes with four slotted tabs
Fits 1/4 and 5/16 inch T-bolts
0.15 by 7 by 6.14 inches
2 year limited warranty
Pros
- Highest average rating in the roundup at 4.7 with very few negative reviews
- Repairs broken
- cracked or worn-out flanges without replacing the whole thing
- Ten mounting holes and elongated slots adapt to awkward floor angles
- Lowest cost of every kit we analyzed
- Adjustable even after the toilet compresses the wax
Cons
- Ring only
- so bolts and a fresh seal are separate purchases
- Not designed to correct a flange sitting below the floor
The Oatey Fix-it ring earned the highest average rating of anything we reviewed, at 4.7. It is also the cheapest item in the group, which is part of why it has accumulated so few negative reviews. Buyers describe an easy, user-friendly install that restores a secure floor connection and removes the leak path.
The design reason is flexibility. Four slotted mounting tabs sit under the toilet base, ten mounting holes give you a choice of fastener positions, and the elongated slots let angled screws grip flooring that is not perfectly flat. It works with both 1/4 inch and 5/16 inch T-bolts, so it covers the two standard closet bolt sizes without a conversion.
It is also adjustable after the toilet compresses the wax, which matters more than it sounds. Over months of use, a wax ring settles slightly, and the slots let you retighten without the ring having to move. The part measures 0.15 by 7 by 6.14 inches, weighs 6.7 ounces, is made in the USA, and carries a two year limited warranty.
The catch is that this is a reinforcement ring, not a complete repair kit. It does not include closet bolts or a wax ring, so budget for those separately. It is also not a height correction device: if your flange sits below the finished floor, adding a ring on top makes the gap slightly worse rather than better.
Some listings describe it in terms of a repair flange, which can cause confusion at the shelf. Read the mounting hole count and bolt compatibility rather than the headline wording, and check that your closet bolts are the 1/4 inch or 5/16 inch T-bolt type the slots expect.
When the Oatey Fix-it is the strongest pick
It suits broken, cracked or worn-out flange ears on an otherwise sound ring, which is the single most common toilet repair. The ten holes and slotted tabs make it forgiving on uneven floors, where a two-hole repair ring has nowhere to put the second bolt.
It is also the pick for anyone working on a floor that is not flat, because angled screws through elongated slots are exactly the situation it was designed for. That is not marketing language; it is what the geometry is for.
Where it stops helping
It will not seal a leak on its own, because a ring has no gasket. Pair it with a fresh wax ring or a wax-free seal, or you will have fixed the wobble and kept the drip.
7. Oatey Set-Rite Flange Extender Kit 43401 - Best for Height Correction
Oatey 43401 Set-Rite Toilet Flange Extender Kit, 1/4" - 1", Red, Yellow"
Corrects flange height 1/4 inch to 1 inch
Combinable 1/8 and 1/4 inch spacers
Works on PVC and cast iron
2.24 ounces with self-tapping screws
Pros
- The correct fix when new flooring has buried the flange
- Spacers combine to hit an exact height correction
- Durafoam gasket seals spacers to the flange with no adhesive
- Works on PVC
- ABS
- cast iron and stainless steel ringed flanges
- Very light at 2.24 ounces
Cons
- Does not seal a broken flange
- only corrects height
- Several spacer combinations must be assembled to reach larger heights
This kit solves one problem, and it solves it properly. When tile, laminate or a poured floor goes over an existing flange, the flange ends up below the finished surface and a standard wax ring can no longer reach it. The Oatey Set-Rite 43401 raises the flange back up by between 1/4 inch and 1 inch during the repair or remodel.
The mechanism is a plastic extender ring with a Set-Rite Durafoam gasket that seals to the existing flange without glue, plus 1/8 inch and 1/4 inch spacers you stack to reach the height you need. The kit also includes a bag of six self-tapping screws to lock the stack together. Because the spacers are combinable, you can hit a specific height rather than settling for an increment that happens to be available.
Material compatibility is broad for a plastic part: it works on PVC, ABS, cast iron and stainless steel ringed flanges. It weighs 2.24 ounces, carries a one year limited warranty, and is designated as a one count item.
Buyers report dependable height correction for low flanges during remodels, with the gasket holding well across flange materials. The rating of 4.6 across 241 reviews reflects that this is a product that does one job correctly.
When height is the actual problem
Buy this when the flange is sound but sits too low, which typically happens after flooring work. Reviewers repeatedly note it as the right part during remodels, and forums independently recommend inexpensive stacking extension rings for exactly this situation.
It is also useful as a companion to a repair ring. If you reinforce a broken flange and it still leaves the toilet low, this corrects the height in the same visit rather than sending you back to the store.
Where it is the wrong tool
It will not repair a cracked or broken flange. Reviewers are clear about this limitation, and it is easy to assume otherwise from the word extender. It is also fussy for large corrections: reaching the top of the range means assembling several spacers, which adds steps and potential misalignment.
8. boeemi Toilet Flange Repair Kit with Wax Ring - Best for Base Leaks
Toilet Flange Repair Kit with Wax Ring for 3-4 Inch Waste Lines
Complete flange and wax ring set
Fits 3-inch or 4-inch waste lines
5.4 by 5.4 by 1.7 inches
Weighs 1.02 pounds
Pros
- All parts in one box
- avoiding a plumber call for a standard seal replacement
- Easy mess-free installation with an accurate fit
- Effective at stopping base leaks on standard floor-mount toilets
- Includes flange
- thick wax ring and full mounting hardware
Cons
- The thick wax ring is closer to standard thickness than advertised
- Only fits 3-inch or 4-inch waste lines
- Will not fix tank leaks or cracked porcelain
Where the previous kit is aimed at remodels, the boeemi kit is aimed squarely at a leak. It includes one toilet flange, one thick wax ring with a plastic horn, and full mounting hardware, in a 5.4 by 5.4 by 1.7 inch package weighing 1.02 pounds. Owners report it works as promised for base leaks on standard waste lines, with a good and easy seal.
It is designed for 3-inch or 4-inch waste lines and standard floor-mounted toilets, and the manufacturer is explicit about scope: it secures the toilet to the floor and seals the drain connection, and it does not address internal tank leaks or cracked porcelain. That kind of narrow claim is refreshing, because it means the product is not being sold as a cure for every toilet problem.
At 4.6 across 238 reviews it sits among the better-rated items here. The installation guidance is also practical: clean and dry the floor and drain area before setting, which is a step people routinely skip.
When this kit is the practical choice
It fits the most common complaint in the category, which is water pooling around the base of a standard toilet. If the flange itself is sound and you just need a complete, correct seal set in one purchase, this does that without a second trip to the store.
It suits anyone who prefers a wax ring on the evidence that wax-free seals are not universally better. For a straightforward floor-mount toilet at standard height, wax remains a proven seal and there is nothing to fix.
What to watch out for
The one recurring complaint is that the ring marketed as thick is closer to standard thickness than buyers expect. If your previous failure was a thin, hard wax bead, check that a standard ring genuinely solves it. It is also limited to 3-inch and 4-inch waste lines, so measure the pipe before committing.
9. Danco Steel Toilet Flange Repair Ring 88904 - Best Budget Steel Ring
Danco 88904 Toilet Flange Repair Ring, Steel, For Use With 1/4 in or 5/16 in Closet Bolts
Plastisol-coated steel ring
Fits 1/4 or 5/16 inch closet bolts
Replaces plastic and cast iron rings
5.92 ounces with 8.5 inch length
Pros
- Solid steel that will not twist or bend when tightened
- Installs over a worn flange without cutting out glued PVC
- Plastisol coating resists corrosion
- Can be shimmed to level the toilet without cracking under load
- Extra screw holes let fasteners bite into the subfloor
Cons
- Hole pattern does not always match the existing flange or listing photos
- Coated steel rather than stainless
- so surface rust can eventually appear
- One reviewer described it as cheap-feeling
The Danco 88904 is a steel split ring that installs over a failing flange and gives the closet bolts somewhere solid to bite. It replaces steel-plastic combination, plastic, brass and cast iron closet rings, and it is slotted for both 1/4 inch and 5/16 inch closet bolts, so it fits the two standard sizes without adaptation.
The key differentiator from plastic repair rings is rigidity. Most reviewers praise the steel ring as a strong, economical way to reinforce a failing flange and avoid the expense of replacing pipe. One buyer specifically notes it can be shimmed to level the toilet without fear of cracking under load, which is the exact failure mode of plastic rings.
The construction detail that matters over time is the plastisol coating, which protects the steel against corrosion. Extra screw holes are provided so fasteners can reach further into the floor or subfloor for better purchase. Dimensions are listed as 8.5 inch length, with an item weight of 5.92 ounces and a limited one year warranty.
It carries the lowest rating of the ten at 4.3 across 199 reviews, and the complaints are specific. The most common is that the hole pattern does not match the existing flange or even the product images on delivery, so plan to work around the mounting holes rather than assuming a direct alignment.
Second, it is coated steel rather than stainless, so surface rust can eventually appear even with the coating. That is a fair trade against the price, but it is not the same long-term corrosion story as stainless. One buyer also described the unit as cheap-feeling, which is subjective but worth weighing against the alternatives.
When the Danco 88904 fits the job
Choose it when you want steel rigidity without the cost of a stainless assembly, particularly on a plastic or brass flange that keeps twisting under bolt torque. It is also useful when you need to shim and level the toilet, because steel will not crack the way plastic does.
The extra screw holes are the underrated feature. On a soft subfloor, being able to run a fastener further out for purchase can be the difference between a repair that holds and one that loosens again.
When to spend a little more instead
If the flange is in a persistently damp location, a stainless ring resists corrosion better over the long term. And if you need precise alignment with the existing bolt holes, check the pattern against your flange before you buy.
10. The Clam 2-Piece Flange Repair Kit GPJ001 - Best Stainless Steel Repair Kit
The Clam 2-Piece Toilet Flange Repair Kit, Fits 4" Drain Pipe, Easy Install, Corrosion Resistant Stainless Steel Finish, Fitted for 1/4 Inch and 5/16 Inch Closet Bolts
409 stainless steel two-piece design
Fits any 4-inch drain pipe
Fits 1/4 and 5/16 inch closet bolts
7 by 7 by 0.5 inches
Pros
- Stainless steel resists corrosion and rust better than coated steel rings
- Two-piece design clamps a broken or bent flange securely
- Fits 4-inch drain pipes and both common closet bolt sizes
- Compatible with all major toilet wax rings
- Made in the USA
Cons
- Base listing is the repair ring only
- wax ring and bolts need the plus variants
- Limited to 4-inch drain pipes
The Clam GPJ001 takes a different approach to reinforcement: instead of a single split ring that slips around the existing flange, it is a two-piece assembly that clamps around the outside. Reviewers appreciate the clamping grip on broken or bent flanges, and the fact that stainless steel resists corrosion better than the coated steel alternatives.
The material is 409 stainless steel, specified for corrosion and rust resistance. It fits any 4-inch drain pipe, which covers most US toilets, and works with both 1/4 inch and 5/16 inch closet bolts. It is also compatible with all major toilet wax rings, so you can keep the seal system you already prefer.
Physical specs are 7 by 7 by 0.5 inches at 5.9 ounces, made in the USA. It is designated as a repair ring only, in stainless steel. At 4.5 across 153 reviews it sits comfortably in line with the other metal rings while offering the better corrosion story.
Where the stainless two-piece design wins
It suits bathrooms with higher humidity, older homes with a history of slow leaks, and anyone who has had coated steel rings show surface rust after a season. The two-piece clamp also holds well on a flange that is bent rather than cleanly broken, which is common where a pipe was nudged.
Because it works with all major wax rings, you are not forced to change your seal system while you are already mid-repair.
What to check before ordering
Confirm your drain pipe is 4 inch. This kit is not listed for 3-inch lines, so it is the one product here that cannot claim universal drain compatibility. Also note the base version is the ring alone, so the wax ring and bolts come from the plus variants.
Signs Your Toilet Flange Is Failing
Before buying anything, confirm you have a flange problem rather than a wax ring problem. The two share a symptom, and treating them the same is the most common expensive mistake. Work through this list in order.
1. The toilet rocks in every direction. Slight movement that settles when you sit is normal for many floors. Movement that stays, or that changes the gap under one side of the base, points at broken flange ears.
2. There is a visible gap or daylight under the toilet base. You should not be able to see the floor through the gap on both sides, and the gap should be roughly even.
3. Water pools around the base after flushing. Persistent dampness that a mop does not resolve is a seal failure. Clean and dry the area, flush, and check again before assuming.
4. A sewer gas smell appears in the bathroom. This is the one symptom worth acting on quickly, because gas escaping means the seal has fully failed rather than weakened.
5. The closet bolts spin without tightening, or the flange rotates. This is the clearest mechanical sign. The bolt has no solid material to grip.
6. Rust-coloured water stains appear around the flange. On cast iron rings this indicates the metal itself is corroding through, which a plastic repair ring cannot solve.
7. The bolts will not come out. Rusted fasteners are common in older homes. A featured answer in a Houzz plumbing discussion recommends drilling out the screw heads rather than fighting them.
8. The subfloor is soft, spongy or stained. If the floor gives under the toilet, the flange is the least of the problem. You are looking at subfloor repair, and no kit here will fix it.
Forum discussions make a useful distinction that most guides blur: fixing a leak and fixing a wobble are different jobs. A wax-free seal solves one. A repair ring solves the other. Buying one when you need the other is the reason some repairs appear to fail.
How to Choose the Best Toilet Flange Repair Kit?
The right kit follows from the damage, and almost nothing else. Start by identifying whether the mount or the seal has failed, then narrow by flange height and pipe material. The four kit families below each solve a specific problem, and matching your failure to the right family is what makes the repair hold.
Spanner or split repair rings go around an existing flange to give broken ears new solid purchase. They fix a wobble caused by a cracked, rusted or broken flange ring, and they do nothing about a leak. One-piece wax-free seals replace the wax ring and grip the toilet horn at a range of flange heights, fixing a leak or a recessed flange but not a broken ring. Flange extenders raise a sound but low flange back to the correct height. Complete replacement kits remove the old flange entirely and install a new one with a fresh seal, which suits remodels and floor work.
Take these measurements before you buy anything, because most returns come down to one of these four numbers:
Flange height: the top of the flange should sit about 1/4 inch above the finished floor. Above that is fine. Flush is workable with some seals. Below it, you need reach, from a deeper wax-free seal or an extender.
Drain pipe diameter: measure the outside of the pipe at the floor. Most kits cover both 3-inch and 4-inch, but The Clam GPJ001 is listed for 4-inch only.
Bolt diameter: 1/4 inch and 5/16 inch closet bolts are the two standard sizes. Repair rings that do not state which they accept may not fit yours.
Subfloor material: wood subfloor, plywood, or concrete slab. Concrete changes the tooling you need, and some kits require a hammer drill and masonry anchors that are not included.
On pipe material, the split is straightforward. PVC and ABS flanges are common from the 1970s onward and can usually be reinforced with a ring. Cast iron flanges in older homes corrode, and a metal repair ring is the appropriate response. One RV owner reported on mygrandrv.com that a metal flange repair ring left the toilet still rocking, which is a reminder that not every flange follows standard residential dimensions.
On concrete slab installations, ordinary wood screws have nothing to bite into. You need masonry anchors and a hammer drill, and you should confirm your kit supports that before you start. The One N Done kit works on concrete with added anchors and tools, while simpler rings assume a wood subfloor.
For wax ring versus wax-free seal, the honest answer is that both work when correctly installed. Wax-free seals win on mess, repositionability, and recessed flanges. Wax still wins on long-established trust and cost. Reviewers of the Korky and Danco wax-free kits report repeat, leak-free results over years, so neither camp is wrong.
Two things to avoid. Do not buy a metal repair ring expecting it to seal anything, since a ring has no gasket and you will still need a fresh wax ring or seal on top. And do not force a plastic flange with over-tightened bolts, which is the specific complaint levelled at the MENNTY kit: PVC cracks where steel does not.
Finally, a note on hardware. Forum users consistently flag retail kits that arrive without bolts, nuts or washers. Confirm what is in the box before you pull the toilet, because discovering a missing part halfway through the job is what turns a one-hour repair into an evening one.
How to Install a Toilet Flange Repair Kit
Most of these jobs take under an hour once you have the parts. You will need a flathead screwdriver or nut driver, an adjustable wrench, a putty knife, a measuring tape, a level, and a pair of gloves. Add a drill and a hammer drill if you are on a concrete slab.
1. Shut off the water and drain the tank. Close the supply valve, flush, then disconnect the fill line and sponge out the remaining water in the bowl and tank.
2. Remove the toilet. Back out the closet bolts, which may require penetrating oil or a drill if rusted, then lift the bowl straight up and set it on towels beside the drain. If you are only resealing, you can often leave the toilet in place.
3. Scrape out the old wax. A putty knife and old toothbrush get the floor and flange clean. Do not leave wax residue, because the new seal or ring will not sit flat over it.
4. Dry-fit before you commit. Install your ring, extender or seal without tightening to confirm height and alignment. This is the step that catches a wrong-diameter kit while it is still easy to undo.
5. Fit the repair part. Split rings wrap around the flange body and bolts go through the new holes into solid subfloor. Extenders stack with spacers until the height is right. Wax-free seals stretch over the toilet horn, and you must remove any existing 1/4 inch extension first if your kit requires it.
6. Set the toilet and tighten evenly. Lower the bowl straight down, then tighten each closet bolt alternately in small increments rather than cranking one side fully. Over-tightening is what cracks plastic flanges.
7. Reconnect and test. Reattach the fill line, turn the water on, and flush several times. Run a paper towel around the base of the bowl and around the bolts to check for a seep, then check again after a day of use.
Repair the Flange or Replace It
Repair is the right call far more often than people assume. Plumbers on r/Plumbing overwhelmingly recommend repairing rather than replacing when the pipe itself is still sound, and the standard professional technique for cast iron is cutting the pipe and gluing in a new flange rather than opening up the floor. The pro trade forum consensus is similar: an inexpensive repair kit or a flange extension spacer ring solves most height problems and broken rings.
Repair is the correct choice when the drain pipe is intact, the subfloor is solid, and the flange ring is cracked or rusted but the surrounding floor holds. A repair ring or a wax-free seal handles both in a single visit.
Replace the flange when the ring is cracked all the way through and cannot be clamped, when the bolts have sheared off inside the plastic, or when a new floor has changed the required height. A complete replacement kit handles this in one job rather than stacking rings.
Step back from the flange entirely when the subfloor is rotted, when the drain pipe is cracked or corroded through, or when the closet bolts have corroded into the pipe itself. No repair ring fixes a floor that moves. In those cases the flange work is the small part of the job, and calling a plumber is the sensible call.
On cost, the honest framing is that a repair kit is a small part of a small job, while a plumber's visit adds labour on top of the same parts. The saving comes from avoiding the call-out, not from the kit being expensive. For most people the deciding factor is confidence with the diagnosis: if you are unsure whether the mount or the seal has failed, a plumber's assessment is worth more than any kit.
Frequently Asked Questions
Do toilet flange repair rings work?
Yes, when the fault is the mount rather than the seal. A repair ring wraps around an existing closet flange and gives the closet bolts solid metal to bite into, which stops a toilet rocking when the flange ears are cracked or rusted. It will not stop a leak, because a ring contains no gasket, so you still need a fresh wax ring or wax-free seal on top. They also do not correct a flange sitting below the floor, since adding height makes that gap slightly worse.
What is the best way to fix a broken toilet flange?
Identify what is actually broken first. If the flange ears are cracked but the ring is intact, clamp a stainless or steel repair ring around it and bolt through new holes into solid subfloor. If the flange is sound but too low, add a flange extender or use a wax-free seal with enough reach. If the ring itself is destroyed, replace the flange or glue in a new one on the existing pipe. Only if the subfloor or drain pipe is compromised do you need to open up the floor.
What is the best toilet flange repair kit?
It depends on the damage rather than on a single winner. For the widest coverage we reviewed, the Korky WaxFree 6000BP fits flanges above, at or below floor level on both 3-inch and 4-inch drain pipes and carries a 10-year warranty. For the deepest recessed flanges, the Danco Perfect Seal 10718X reaches from 1/2 inch above to 1-1/2 inches below the floor. For a cracked or rusted ring, a stainless repair ring such as The Clam GPJ001 is the most corrosion-resistant option.
How much does a plumber charge to repair a toilet flange?
The charge varies by region and by how much of the floor has to come up, and the parts cost is usually the smaller half of it. What matters for your decision is that most flange repairs are a single-visit job under an hour with a repair kit, whereas anything involving a rotted subfloor or a cast iron pipe cut becomes a much larger job. If you can confirm the pipe and subfloor are sound, the DIY route is well within reach.
Who makes the best toilet repair kits?
Brands that appear repeatedly in this category include Oatey, Danco, Korky, LASCO and Fernco, and One N Done is frequently named for all-in-one wax-free systems. Oatey covers both ends of the range, from the Fix-it repair ring to the Set-Rite extender. Danco offers a deep-reach wax-free seal and a steel repair ring. For the specific question of broken or rusted flanges, Oatey and Danco are the two names most often recommended.
What are people saying about the One N Done toilet flange Repair Kit?
Owners value the single-kit, no-wax approach, which spans flange depths from 1/8 inch above the floor to 1-1/2 inches below and installs over broken flanges of any material including RV and cast iron. Reviewers particularly like that it centres the bowl and removes wobble rather than just sealing it. The main limitations reported are that concrete subfloors need a hammer drill and anchors, and that any existing 1/4 inch flange extension must be removed first.
What is the best toilet flange to use?
For a new installation, a quality PVC or ABS closet flange bonded to the drain with the correct adhesive and anchored into solid subfloor is the standard choice. The flange top should sit about 1/4 inch above the finished floor so a standard wax ring compresses properly. When repairing an existing flange, material matters less than matching the failure: metal reinforcement for a cracked or rusted ring, and a wax-free seal with reach for a flange that sits low.
Our Verdict on the Best Toilet Flange Repair Kits
The Korky WaxFree 6000BP is our pick for the best toilet flange repair kits overall, because it covers the widest range of flange heights, works on both 3-inch and 4-inch drain pipes, lets you reposition the toilet during installation, and carries the longest warranty in the group at 10 years. Its 4.5 rating across more than 1500 reviews is the most heavily backed result here.
Where it falls short, the alternatives are clear. The Danco Perfect Seal 10718X reaches far deeper into a recessed flange than anything else we tested. The Oatey Fix-it ring has the highest rating at 4.7 and the lowest cost, making it the sensible pick for cracked flange ears on a sound ring. The One N Done kit is the answer when a flange is both low and damaged, or when you are working on an RV. The Oatey Set-Rite extender fixes height alone, and a stainless ring from The Clam or a steel ring from Danco handles corrosion-prone bathrooms.
Whichever one you choose, measure the flange height, the drain diameter, the bolt size and the subfloor material before you order. That four-point check is what separates a repair that holds for years from one that fails again next season. Our other roundups, including the best tire repair kits and the best paintless dent repair kits, follow the same specification-first approach, and we will keep updating this list through 2026 as new kits reach the market.