When pump lids, light lenses, or strainer housings begin leaking, the cause is almost always a worn or flattened O-ring. The Aladdin O-318-0 Multi-Use O-Ring is a precision replacement seal engineered to restore a secure, leak-free connection across a wide range of pool pump, strainer, and lighting applications.

Designed to replace multiple OEM part numbers—including Pentair® 355332, 352600, and 350013—this O-ring delivers OEM-equivalent fit, compression, and durability. It is commonly used as a pump lid O-ring, light lens seal, and pot flange O-ring in residential and commercial pool systems.

At Benchmark Pool Supply, the O-318-0 is one of the most frequently used service O-rings due to its broad compatibility. Exposure to chlorine, heat, and pressure cycling causes older seals to harden or lose elasticity. Replacing the seal with the Aladdin O-318-0 helps prevent air leaks, water seepage, and loss of pump prime.

Manufactured from pool-grade elastomer, this O-ring is designed to withstand harsh pool environments while maintaining consistent sealing performance.

Designed for Pump Lids, Light Lenses & Strainers

The Aladdin O-318-0 O-Ring is engineered for multi-application use where reliable sealing is critical. It is commonly installed in both modern and legacy pump designs, including post-1998 and older Challenger® configurations.

Typical applications include:

• Light lens sealing O-rings

• WhisperFlo® AQ / WFE pump lid O-rings

• Challenger® pump lids (after 11/1998)

• Old-style Challenger® & Pinnacle™ 700 pump lids

• EQ Series® commercial strainer pot flange O-rings

• 6" trap basket lid & nut assemblies

• Champion / Power Defender 1.65HP VS & SMF pumps (2014 style)

Using the correct O-ring profile ensures even compression, preventing leaks and premature wear on pump lids and housings.

Why Replacing Pump Lid O-Rings Matters

Pump lid and strainer O-rings are under constant stress from suction, pressure changes, and chemical exposure. When these seals fail, common issues include:

• Air entering the pump causing loss of prime

• Water leaking around pump lids or strainers

• Reduced circulation and filtration efficiency

• Increased strain on pump motors

Replacing worn seals with the Aladdin O-318-0 O-Ring is a simple maintenance step that protects your pump and extends equipment life.

Built for Long-Term Pool Performance

This O-ring is manufactured specifically for swimming pool applications and maintains elasticity under continuous operation. It is ideal for both service technicians and DIY pool owners who want dependable, OEM-quality sealing performance.

Recommended for:

• Routine pump maintenance

• Light and strainer resealing

• Professional pool service repairs

• Preventive seasonal servicing

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Aladdin O-318-0 O-Ring from Benchmark Pool Supply, you’re buying from a pool equipment specialist who understands real-world fitment—not just part numbers. We stock proven replacement parts that install correctly and perform reliably.

If you need help confirming compatibility with your specific pump, light, or strainer, our team is always here to help.