Aladdin Filter Head/Volute/Seal Plate O-Ring | O-240

The Aladdin O-240 O-Ring is an aftermarket replacement seal designed for pump housings, filter heads, volutes, and seal plates used across a wide range of pool and spa equipment models. Its near 10-inch inner diameter and sturdy ¼-inch cross-section allow the gasket to seat securely between mating components, forming a watertight, pressure-holding seal that helps maintain system efficiency. Built from chemical-resistant rubber, the O-240 withstands regular exposure to chlorinated and saltwater pool conditions while retaining its flexibility through repeated maintenance cycles. Compatible with equipment from major manufacturers such as Hayward, Pentair Ultra-Flow, Sta-Rite, Aqua-Flo, and similar pump and filter systems, this O-ring restores sealing integrity and supports long-term circulation performance.

Highlights

• Cross-Brand Compatibility: Designed to fit various pump housings, volutes, seal plates, and filter heads used by Hayward, Pentair Ultra-Flow, Sta-Rite, Aqua-Flo, and related equipment lines.

• Proper 10-Inch Sizing: Built to the approximate 10-inch inner diameter and ¼-inch thickness of original factory gaskets to ensure stable seating and leak-resistant performance.

• Long-Lasting Elastomer Construction: Made from rubber engineered to tolerate chlorine, saltwater, and heat cycles without deformation or cracking.

• Maintains Internal Pressure: Forms a tight, durable seal that prevents leaks and pressure loss, helping filtration systems operate smoothly and efficiently.

• Cost-Effective Service Component: A practical, low-cost solution for resealing pump and filter assemblies during routine maintenance or equipment rebuilds.

Compatibility

• StarClear
• Dura-Glas
• Max-E-Pro
• Maxi-Glas
• Swimquip

Replacement for OEM Part Numbers

• CX900F
• 39006000
• 92200180
• 320-110
• 31-358
• U9-228A
• 35505-0422
• O-1082

Additional Info

The Aladdin O-240 O-Ring features a 10-inch inner diameter and a thick ¼-inch cross-section used to seal pump housings, filter heads, volutes, and seal plates across multiple equipment brands. This section helps SOSPool.com customers confirm compatibility before ordering, understand installation expectations when the part arrives, and troubleshoot sealing issues that commonly occur with worn O-rings. These FAQs focus on leak prevention and maintaining stable circulation pressure.

Compatibility Confirmation for Online Orders

Online customers often check size and model references before completing their order.

How do I verify that the O-240 is the correct O-ring for my pump or filter?

Measure the inner diameter of your existing gasket or check your equipment’s documentation for a 10-inch sealing ring. If your system uses that dimension, the O-240 typically fits.

Is this O-ring suitable for Hayward, Pentair, or Aqua-Flo systems?

Yes, many of their pump and filter housings use this common sealing size, and the O-240 is designed as a universal-profile replacement.

Can this O-ring fix leaks that appear around my filter head or pump volute?

Yes, a worn or flattened O-ring often causes seepage or pressure loss, and replacing it with the O-240 usually restores a proper seal.

Installation and Setup After Delivery

These questions help guide installation once the part arrives.

What steps should I take before installing the O-240?

Clean the housing groove, inspect for cracks, and apply a light silicone lubricant to prevent twisting when the housing is reassembled.

Why is the housing still leaking after replacing the O-ring?

Check clamp alignment, ensure the O-ring isn’t pinched or rolled, and confirm the surfaces are clean and debris-free before tightening.

How do I test if the new seal is holding correctly?

Run the system and watch for moisture around the housing, monitor pressure stability, and confirm the pump primes without drawing air.

Shipping, Delivery, and Online Support

These answers help customers ordering through SOSPool.com.

How fast does the O-240 typically ship?

Most orders process quickly, and exact delivery estimates appear at checkout with tracking provided once shipped.

What should I inspect upon delivery?

Confirm the O-ring retains a round profile, shows no flat spots, and measures correctly for your housing before installation.

Do customers often add related parts to their order?

Yes, many online customers also purchase lubricants, replacement clamps, or companion O-rings for full pump or filter servicing.