Looking for the best O‑ring cartridges to keep your equipment running smoothly?
We help you choose the right O‑ring cartridges with simple, clear guidance for a confident and easy buying experience.
O-rings are small but mighty parts that keep your pool filters and equipment running smoothly. They stop leaks and save money on repairs. Finding the right O-ring can be tricky, but we’re here to help.
We’ve tested and reviewed the best O-ring cartridges for pools, cars, and more. Our guide makes it easy to choose the perfect fit for your needs.
List of Top 10 O Ring Cartridges
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Captain O-Ring – Replacement DEX2400Z5 O-Ring for Hayward Outlet Elbow for Micro-Clear, Pro-Grid DE Filters and Swim-Clear, HCF Cartridge Filters (3 Pack) |
This is perfect for anyone who wants a quick, easy, and reliable fix for their Hayward or compatible filter. It’s great for pool owners who want strong, long‑lasting o-rings that fit right every time. |
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CX900F Filter Head O-Ring Replacement for Hayward Star-Clear Plus Cartridge Filter C751 C900 C1200 C1750 (2 Pack) |
This CX900F Filter Head O-Ring Replacement is perfect for pool owners who want to keep their Hayward Star-Clear Plus Cartridge Filter in top shape. It’s ideal for regular maintenance, ensuring no leaks and long-lasting performance. |
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Romeda O Ring Kit 1050 PCS, O Ring Assortment Kit 21 Size, Metric Nitrile Rubber O Rings for Car Auto Vehicle Repair Faucet Plumbing Air or Gas Sealing Connections Resist Oil and Heat |
This kit is perfect for DIY fans and repair pros who want quick, simple fixes. It’s great for anyone who needs strong, heat‑safe seals for cars, faucets, pumps, or tools. |
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87300400 Body O-Ring for Pentair Clean & Clear Cartridge Filters Models CC50 CC75 CC100 CC150 CC200 Replace 87300400Z O-343 47044706R (3 Pack) |
This 3-pack O-ring set is perfect for pool owners who want a tight, leak-free seal and smooth filter performance. It’s great for anyone who needs a simple, reliable replacement that fits many Pentair Clean & Clear models. |
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Captain O-Ring – Replacement CCX1000G O-Ring for Hayward Xstream CC1000, CC1500, CC2000 Series Cartridge Filter Tank Body |
This product is perfect for pool owners who want a strong, long‑lasting seal that keeps their filter running smooth. It’s great for anyone who needs a simple, reliable replacement o‑ring that fits right the first time. |
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Captain O-Ring – Replacement 805-0448 / WC9-3 O-Rings for Waterway ProClean, Pentair, Jacuzzi 78105 (2 Pack) |
This is perfect for pool owners who need a fast, easy fix for worn O-rings. It is also great for people who want strong, long-lasting seals for Waterway, Pentair, or Jacuzzi filter parts. |
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Pentair WC9-3 Black O-Ring Replacement for Select Sta-Rite Pool and Spa Cartridge Filters |
This O-ring replacement is perfect for pool and spa owners who need a reliable seal for their Sta-Rite Posi-Flo II filters. It’s easy to install and fits specific models, making it a great choice for quick repairs. |
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39010200 Tank Clamp O-Ring Replacement for Pentair CCP 320/420/520 Clean & Clear Plus Cartridge Filters & FNSP24/36/48/60 FNS Plus Filter, Pool Filter Sealing Ring |
This 39010200 Tank Clamp O-Ring is perfect for pool owners who want to fix leaks and keep their filters working well. It’s easy to install and fits many Pentair models, making it a great choice for quick repairs. |
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Johnson Pump 50512PK Motor Cartridge Housing O-Ring |
This Johnson Pump O-Ring is perfect for boat owners who need a reliable replacement part. It’s easy to install and works with all Johnson Pump Cartridge Bilge and Aerator Pumps. |
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CX900F U9-228 O-240 Filter Head Tank Lid O-Ring Replacement for Hayward Star-Clear Plus Cartridge and Separation Filter Series C751 C900 C1200 C17502 (3/Pack) |
This product is perfect for pool owners who want a fast, easy fix for a worn or leaking filter O‑ring. It keeps your system tight, safe, and running smooth. |
Detailed Reviews
Discover the top 10 O-Ring Cartridges in our expert-curated guide. Each pick is chosen for quality, durability, and value, ensuring a perfect fit for your needs. Whether you’re fixing a pool filter or tackling DIY repairs, this list has you covered. Read on to find the best O-Ring solution for your project!
1. Captain O-Ring – Replacement DEX2400Z5 O-Ring for Hayward Outlet Elbow for Micro-Clear, Pro-Grid DE Filters and Swim-Clear, HCF Cartridge Filters (3 Pack)
Captain O-Ring gives you a simple, strong fix for your filter system. These DEX2400Z5 O-rings fit tight and seal fast.
They fit many Hayward filters. They match several alternate part numbers. They come in a 3-pack for easy use.
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Perfect For:
This is perfect for anyone who wants a quick, easy, and reliable fix for their Hayward or compatible filter. It’s great for pool owners who want strong, long‑lasting o-rings that fit right every time.
Ready to Purchase?
2. CX900F Filter Head O-Ring Replacement for Hayward Star-Clear Plus Cartridge Filter C751 C900 C1200 C1750 (2 Pack)
This o-ring fits your Hayward filter. It stops water leaks fast. Keep your pool clean now.
Install the seal easily. It lasts a long time.
Buy this two pack today. Get a great fit. Save more money now.
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Perfect For:
This CX900F Filter Head O-Ring Replacement is perfect for pool owners who want to keep their Hayward Star-Clear Plus Cartridge Filter in top shape. It’s ideal for regular maintenance, ensuring no leaks and long-lasting performance.
Ready to Purchase?
3. Romeda O Ring Kit 1050 PCS, O Ring Assortment Kit 21 Size, Metric Nitrile Rubber O Rings for Car Auto Vehicle Repair Faucet Plumbing Air or Gas Sealing Connections Resist Oil and Heat
The Romeda O Ring Kit is a 1050-piece set with 21 sizes. It’s perfect for car repairs, plumbing, and sealing connections.
High-quality NBR material resists oil, heat, and extreme temperatures. Inner diameters range from 1 to 25mm. Thicknesses vary from 1mm to 3mm.
Comes in a labeled organizer case for easy storage. Ideal for DIY repairs on faucets, engines, and pumps. Meets all your sealing needs.
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Perfect For:
This kit is perfect for DIY fans and repair pros who want quick, simple fixes. It’s great for anyone who needs strong, heat‑safe seals for cars, faucets, pumps, or tools.
Ready to Purchase?
4. 87300400 Body O-Ring for Pentair Clean & Clear Cartridge Filters Models CC50 CC75 CC100 CC150 CC200 Replace 87300400Z O-343 47044706R (3 Pack)
Keep your pool filter running smoothly with this 87300400 body O-ring. It’s compatible with many Pentair models, ensuring a perfect fit. This 3-pack offers great value for routine maintenance.
Replace worn-out seals easily with this durable O-ring. It prevents leaks and maintains efficiency. Designed for long-lasting use, it’s a reliable choice for your filtration system.
Fits Pentair Clean & Clear and other models. Simple to install, it restores proper function. Keep spares handy for future needs.
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Perfect For:
This 3-pack O-ring set is perfect for pool owners who want a tight, leak-free seal and smooth filter performance. It’s great for anyone who needs a simple, reliable replacement that fits many Pentair Clean & Clear models.
Ready to Purchase?
5. Captain O-Ring – Replacement CCX1000G O-Ring for Hayward Xstream CC1000, CC1500, CC2000 Series Cartridge Filter Tank Body
The Captain O-Ring is a replacement part for Hayward XStream filters. It fits CC1000, CC1500, and CC2000 models. Always check your manual before buying.
This O-ring is made from durable synthetic rubber. It has no spliced seams, so it lasts longer.
Proudly assembled in the USA, it comes with a warranty. Trust Captain O-Ring LLC for quality.
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Perfect For:
This product is perfect for pool owners who want a strong, long‑lasting seal that keeps their filter running smooth. It’s great for anyone who needs a simple, reliable replacement o‑ring that fits right the first time.
Ready to Purchase?
6. Captain O-Ring – Replacement 805-0448 / WC9-3 O-Rings for Waterway ProClean, Pentair, Jacuzzi 78105 (2 Pack)
Keep your pool system tight and leak-free with these strong Captain O-Ring replacements. Each ring fits clean and stays firm.
They match Waterway, Pentair, and Jacuzzi filter models. They hold a steady seal. They last a long time.
The rings use tough synthetic rubber. The pack gives you two O-rings. They are made in the USA with care.
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Perfect For:
This is perfect for pool owners who need a fast, easy fix for worn O-rings. It is also great for people who want strong, long-lasting seals for Waterway, Pentair, or Jacuzzi filter parts.
Ready to Purchase?
7. Pentair WC9-3 Black O-Ring Replacement for Select Sta-Rite Pool and Spa Cartridge Filters
This black O‑ring keeps your filter tight. It fits Sta‑Rite Posi‑Flo II models PTM50, PTM70, PTM100, and the PTM135 Series. It also works with the Sta‑Rite separation tank.
The seal is simple to install. It gives your pool or spa a clean, steady flow.
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Perfect For:
This O-ring replacement is perfect for pool and spa owners who need a reliable seal for their Sta-Rite Posi-Flo II filters. It’s easy to install and fits specific models, making it a great choice for quick repairs.
Ready to Purchase?
8. 39010200 Tank Clamp O-Ring Replacement for Pentair CCP 320/420/520 Clean & Clear Plus Cartridge Filters & FNSP24/36/48/60 FNS Plus Filter, Pool Filter Sealing Ring
This O-ring gives your pool filter a tight, clean seal. It stops leaks fast.
It fits Pentair CCP and FNS Plus filters. It installs in just a few minutes. It keeps your system running smooth.
The ring is made of strong rubber. It holds up to heat and pressure. It lasts for a long time.
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Perfect For:
This 39010200 Tank Clamp O-Ring is perfect for pool owners who want to fix leaks and keep their filters working well. It’s easy to install and fits many Pentair models, making it a great choice for quick repairs.
Ready to Purchase?
9. Johnson Pump 50512PK Motor Cartridge Housing O-Ring
This replacement O-ring fits perfectly in all Johnson Pump Cartridge Bilge and Aerator Pumps. It stops leaks fast and keeps your pump working right. The fit is tight and secure.
This pack includes one O-ring with a one year warranty from the manufacturer. It’s a strong part that lasts a long time.
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Perfect For:
This Johnson Pump O-Ring is perfect for boat owners who need a reliable replacement part. It’s easy to install and works with all Johnson Pump Cartridge Bilge and Aerator Pumps.
Ready to Purchase?
10. CX900F U9-228 O-240 Filter Head Tank Lid O-Ring Replacement for Hayward Star-Clear Plus Cartridge and Separation Filter Series C751 C900 C1200 C17502 (3/Pack)
This O‑Ring set keeps your filter tight and secure. It gives your system a clean, firm seal every time.
It fits Hayward Star‑Clear Plus and Separation Tank models. It replaces many common part numbers with ease. It installs fast and sits snug.
The size is about 10.4″ OD × 9.88″ ID × 0.28″ thick. The pack includes three CX900F O‑Rings. The material is built for steady, reliable use.
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Perfect For:
This product is perfect for pool owners who want a fast, easy fix for a worn or leaking filter O‑ring. It keeps your system tight, safe, and running smooth.
Ready to Purchase?
Buying Guide
O-rings are small but mighty parts that keep your pool filters and equipment running smoothly. They stop leaks and save money on repairs. Finding the right O-ring can be tricky, but we’re here to help.
Buying the Best O-Ring Cartridges: A Simple Guide
Choosing the right O-ring is easy when you know what to look for. Here’s how to pick the perfect one for your needs:
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Compatibility:
Make sure the O-ring fits your filter model. Check the part number or manual to avoid mistakes. -
Material:
Look for durable materials like synthetic rubber or NBR. They resist heat, oil, and wear for longer use. -
Size:
Measure the inner diameter (ID) and thickness. A snug fit stops leaks and keeps your system running smoothly. -
Pack Size:
Buy multi-packs for routine maintenance. Having spares saves time and money later. -
Brand Trust:
Choose trusted brands like Captain O-Ring or Pentair. They offer warranties and reliable quality. -
Ease of Installation:
Pick O-rings that are easy to install. Simple fixes mean less downtime for your equipment. -
Price and Value:
Compare prices for the best deal. Multi-packs often give great value for your money.
With these tips, you’ll find the perfect O-ring every time. Keep your systems leak-free and running like new!