Looking for the best triple seal flush balls to ensure a leak-free toilet? We’ve tested top brands to bring you 7 reliable and long-lasting options that are easy to install and fit most toilets.
Triple seal flush balls are essential for a leak-free toilet. They ensure a tight seal, saving water and preventing odors.
These small parts make a big difference in your bathroom’s efficiency. They are easy to install and fit most toilets. Fix leaks and improve flushes with the right seal.
We’ve tested top brands to find the best options for you. Discover reliable choices that last long and work well. Upgrade your toilet with confidence today.
List of Top 7 Triple Seal Flush Balls
| Image | Title | Best For | Price |
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LASCO 04-1515 2-3/4-Inch Triple Seal Toilet Tank Ball , Red |
This toilet tank ball is perfect for anyone fixing an older toilet. It works with common setups and old-style valves. |
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Case 5169 Triple Seal Flush Ball replacement by NuFlush |
This NuFlush replacement is perfect for anyone with a Case 5169 toilet. It fits tightly and works great. |
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Toilet Tank Ball, Triple Seal, 2.75-In. |
This Toilet Tank Ball is perfect for older toilets with brass flush valves. It fits most and has a triple seal for a tight fit. |
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BougeRV RV Toilet Flush Ball Seal Replacement RV Accessories Flush Ball Gaskets for Dometic 300/310/320- Equivalent to Part Number 385311658 (2 Pack) |
This RV toilet seal replacement is perfect for RV owners who want a reliable, leak-free toilet system. It’s easy to install and keeps odors out, making your RV trips cleaner and fresher. |
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UYYE RV Toilet Seal Replacement for Dometic 300/310/320 ,Premium Flush Ball Seal & Flange Gasket Kit 385311658, Fixes Water Leaks and Bad Odors, 2-Pack |
This RV toilet seal replacement is perfect for RV owners who want a clean and odor-free bathroom. It’s easy to install and fixes leaks fast, making it ideal for anyone with a Dometic 300, 310, or 320 toilet. |
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Flush Ball Seal Replacement Part 385311658 Compatible with Dometic Sealand 300, 301, and 310 Series Toilets, 3 Packs |
This flush ball seal replacement is perfect for RV or boat owners who need a reliable fix for their Dometic Sealand toilets. It’s easy to install and works great for 300, 301, and 310 series models. |
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Replacement Flush Ball Seals For For Dometic RV Toilets Set of 3 Silicone Seals to Fix Leakage Problems in Models 300, 310, 320 |
This product is perfect for RV owners who want to fix toilet leaks easily and save money. It’s simple to install and works great for Dometic models 300, 310, and 320. |
Detailed Reviews
Discover the top 7 Triple Seal Flush Balls for your toilet, handpicked for reliability and performance. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value. Whether you need a durable fix or a budget-friendly option, this guide has you covered. Find the perfect fit to keep your toilet leak-free and working smoothly.
1. LASCO 04-1515 2-3/4-Inch Triple Seal Toilet Tank Ball , Red

The LASCO 04-1515 is a 2-3/4-inch red toilet tank ball. It lets water out when you flush.
This unit works with upper and lower lift wires. It fits old brass flush valves. Most common setups can use it.
The Lasco brand is trusted and reliable. It’s easy to install and built to last. Fix your toilet with this simple solution.
| Pros | Cons |
|---|---|
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Perfect For:
This toilet tank ball is perfect for anyone fixing an older toilet. It works with common setups and old-style valves.
Ready to Purchase?
2. Case 5169 Triple Seal Flush Ball replacement by NuFlush

The Case 5169 Triple Seal Flush Ball replacement by NuFlush is made for a tight fit. It helps your toilet work the way it should.
It fits the Case 5169 Triple Seal Flush Ball. It is easy to use. It gives a proper seal.
Choose this replacement part for a clean, snug fit. It helps support smooth flush action. It is a smart fix for your toilet.
| Pros | Cons |
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Perfect For:
This NuFlush replacement is perfect for anyone with a Case 5169 toilet. It fits tightly and works great.
Ready to Purchase?
3. Toilet Tank Ball, Triple Seal, 2.75-In.

Fix older toilets with the Triple Seal Toilet Tank Ball. This 2.75-inch part is made for brass flush valves.
It fits most toilets and comes carded for easy use. The triple seal ensures a tight fit and stops leaks.
Simple to install. Works well. Lasts long.
| Pros | Cons |
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Perfect For:
This Toilet Tank Ball is perfect for older toilets with brass flush valves. It fits most and has a triple seal for a tight fit.
Ready to Purchase?
4. BougeRV RV Toilet Flush Ball Seal Replacement RV Accessories Flush Ball Gaskets for Dometic 300/310/320- Equivalent to Part Number 385311658 (2 Pack)

The BougeRV RV Toilet Flush Ball Seal is a must-have replacement for Dometic 300/310/320 toilets. It fits perfectly and replaces part #385311658. This 2-pack ensures you have a spare ready.
Made from durable rubber, it prevents leaks and odors. The easy installation saves time and hassle. Keep your RV fresh and clean with this reliable seal.
With 12-month tech support, you’re covered if issues arise. BougeRV ensures quality and peace of mind. Upgrade your RV toilet today!
| Pros | Cons |
|---|---|
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Perfect For:
This RV toilet seal replacement is perfect for RV owners who want a reliable, leak-free toilet system. It’s easy to install and keeps odors out, making your RV trips cleaner and fresher.
Ready to Purchase?
5. UYYE RV Toilet Seal Replacement for Dometic 300/310/320 ,Premium Flush Ball Seal & Flange Gasket Kit 385311658, Fixes Water Leaks and Bad Odors, 2-Pack

Fix leaks now. This seal kit works.
It stops odors fast. The rubber is strong. It fits Dometic toilets.
Install it quickly. Keep water inside.
| Pros | Cons |
|---|---|
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Perfect For:
This RV toilet seal replacement is perfect for RV owners who want a clean and odor-free bathroom. It’s easy to install and fixes leaks fast, making it ideal for anyone with a Dometic 300, 310, or 320 toilet.
Ready to Purchase?
6. Flush Ball Seal Replacement Part 385311658 Compatible with Dometic Sealand 300, 301, and 310 Series Toilets, 3 Packs

Fix your toilet with the Flush Ball Seal Replacement Part 385311658. It works with Dometic Sealand 300, 301, and 310 series toilets.
This part is made of nitrile butyl rubber, a durable material. Each pack includes three flush ball seals, so you have extras on hand.
Easy to install, fits perfectly, and saves money.
| Pros | Cons |
|---|---|
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Perfect For:
This flush ball seal replacement is perfect for RV or boat owners who need a reliable fix for their Dometic Sealand toilets. It’s easy to install and works great for 300, 301, and 310 series models.
Ready to Purchase?
7. Replacement Flush Ball Seals For For Dometic RV Toilets Set of 3 Silicone Seals to Fix Leakage Problems in Models 300, 310, 320

Fix your RV toilet now. These silicone seals stop leaks. They fit Dometic models well.
This set of 3 lasts long. Keep your bathroom clean and dry.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for RV owners who want to fix toilet leaks easily and save money. It’s simple to install and works great for Dometic models 300, 310, and 320.
Ready to Purchase?
Buying Guide
Triple seal flush balls are key for a leak-free toilet. They save water and stop odors.
Choosing the right one makes your bathroom work better. Here’s how to pick the best triple seal flush ball for you.
- Toilet Type: Check if it fits your toilet model. Some work for older toilets, others for RV toilets.
- Material: Look for durable rubber or silicone. These last longer and seal tightly.
- Size: Measure your flush valve. Get the right size for a snug fit.
- Brand: Pick trusted brands like LASCO or NuFlush. They are reliable and easy to install.
- Pack Size: Buy multi-packs for spares. This saves time and money later.
- Ease of Install: Choose ones that are simple to install. No tools? Even better.
- Warranty: Look for support or warranties. This gives you peace of mind.