A leaking filter tank seam is one of the most common—and most disruptive—issues in pool filtration systems. The Aladdin O-497-0 Tank O-Ring is a heavy-duty, multi-use replacement seal engineered to restore a secure, watertight connection between filter tank halves and housings.

Designed as a direct replacement for Pentair® OEM part 39010200, this tank O-ring delivers OEM-equivalent fit, compression, and durability. It is commonly used in Pentair Clean & Clear®, Titan, 5000 Series, and FNS® Plus filters, where consistent sealing pressure is critical to maintaining proper system operation.

At Benchmark Pool Supply, tank O-ring failures are one of the most frequent causes of filter leaks we see in the field. Over time, large tank O-rings flatten, harden, or lose elasticity due to chemical exposure, pressure cycling, and heat. Replacing the worn seal with the Aladdin O-497-0 helps eliminate leaks, prevent air intrusion, and protect the filter clamp and tank from uneven stress.

Manufactured from pool-grade elastomer, this O-ring is built to withstand continuous exposure to chlorinated water and the high internal pressures found in modern filtration systems.

Designed for Pool Filter Tank Applications

The Aladdin O-497-0 O-Ring is specifically sized and formulated for large filter tank sealing surfaces. Its profile ensures even compression around the entire tank circumference, reducing the risk of pinch points, blowouts, or recurring leaks.

Common applications include:

• Pentair Clean & Clear® filter tank seals

• Pentair FNS® Plus DE filter tank O-rings

• Pentair Titan and 5000 Series filters

• Multi-use tank sealing applications

Using the correct tank O-ring is essential, as undersized or hardened seals can lead to clamp failure, water loss, or damage to the filter body.

Why Replacing Tank O-Rings Is Critical

Tank O-rings operate under constant pressure and are one of the most stressed sealing components in a pool system. When they fail, common symptoms include:

• Water leaking at the filter tank seam

• Air entering the filtration system

• Reduced filtration efficiency

• Increased wear on tank clamps and housings

Replacing the seal proactively with the Aladdin O-497-0 Tank O-Ring helps maintain system integrity and extends the life of your filter.

Built for High-Pressure Pool Systems

This O-ring is engineered for demanding residential and commercial pool environments. It maintains elasticity under pressure, resists chemical degradation, and delivers long-term sealing reliability.

Ideal for:

• Seasonal filter servicing

• Tank resealing after internal filter maintenance

• Professional pool technicians

• DIY pool owners performing filter repairs

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Aladdin O-497-0 Tank O-Ring from Benchmark Pool Supply, you’re buying from a pool equipment specialist who understands real-world filtration repairs—not just part numbers. We stock proven replacement parts that fit correctly and perform reliably under pressure.

If you need help confirming compatibility with your specific Pentair filter model, our team is always ready to help.