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

The Aladdin O-240 O-Ring is a precision-molded aftermarket seal designed to replicate the original dimensions used on many pump housings, seal plates, volutes, and filter heads across major pool and spa equipment brands. With an inner diameter near 10 inches and a ¼-inch cross-section, it forms a tight, dependable barrier between joined components to prevent leaks and maintain consistent system pressure during circulation. Its chemical-resistant rubber composition withstands exposure to chlorinated and saltwater environments, retaining flexibility and sealing integrity through repeated maintenance cycles. Compatible with equipment from brands such as Hayward, Pentair Ultra-Flow, Sta-Rite, Aqua-Flo, and various filter and pump assemblies, the O-240 is a reliable replacement option for restoring pressure stability and long-term system performance.

Highlights

• Wide Equipment Compatibility: Fits volutes, seal plates, filter heads, and pump housings found across many Hayward, Pentair Ultra-Flow, Sta-Rite, and Aqua-Flo models, making it a versatile service part.

• Accurate 10-Inch Interior Diameter: Matches original manufacturer sizing with a near 10-inch ID and ¼-inch thickness to ensure proper seating and dependable sealing between components.

• Resilient Rubber Material: Crafted from chemical-resistant elastomer that tolerates chlorinated and saltwater exposure without shrinking, cracking, or losing flexibility.

• Protects System Pressure: Maintains a consistent watertight connection to prevent leaks, reduce air intrusion, and support stable filtration and circulation performance.

• Practical Maintenance Upgrade: Provides an economical way to reseal existing pump or filter housings during routine service instead of replacing costly assemblies.

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 provides a 10-inch inner diameter and ¼-inch cross-section for sealing pump housings, volutes, filter heads, and seal plates across multiple equipment lines. This section supports Wholesale Pool Mart customers and service professionals who need clear compatibility guidance, installation prep, and maintenance planning for jobs involving bowl or housing reseals. The information below helps streamline field service routes and reduce return trips.

Compatibility and System Matching

Technicians typically confirm seal size before leaving for scheduled service calls.

Is the O-240 compatible with pumps and filters using a 10-inch head or volute seal?

Yes, most systems requiring a 10-inch ID and thick-profile O-ring accept the O-240, including many Hayward and Pentair product families.

Can this gasket be used on older residential and commercial systems?

Yes, its universal dimensions allow it to replace seals on older Ultra-Flow, Aqua-Flo, and similar models that share the standard housing size.

Does this O-ring help restore system pressure during refurbishment?

Yes, replacing a fatigued or flattened seal with the O-240 often corrects low-pressure issues caused by air leaks around the housing.

Installation and Field Troubleshooting

These questions address technician workflows and common sealing issues.

What prep steps ensure the O-240 will seat correctly during installation?

Most installers clean the housing groove, remove scale, and apply a thin coating of lubricant so the O-ring compresses evenly without binding.

Why might a system still leak after installing this O-ring?

Uneven clamp tension, misalignment of the housing, or leftover debris in the groove can all compromise sealing performance. A reseat usually resolves the problem.

Will this O-ring improve prime retention on older pumps?

Yes, sealing the housing properly reduces air intrusion, making it easier for pumps to prime and maintain consistent suction.

Local Pricing and Service Coordination

This section supports job planning, route scheduling, and stocking needs.

Can I check nearby store stock before a service appointment?

Yes, many technicians call ahead to compare availability across multiple Wholesale Pool Mart locations for same-day pickup.

Does the O-240 work well for bulk maintenance plans?

Yes, because of its universal compatibility, many service teams keep several on hand for seasonal pump and filter reseals.

Are there related parts technicians often purchase together?

Common additions include seal plate gaskets, shaft seals, and lubricants used during full equipment rebuilds.