Aladdin O-305 Star-Clear Filter Head O-Ring | CX250F

The Aladdin O-305 Hayward Star-Clear Filter Head O-Ring is engineered to match the original Hayward CX250F seal used on Star-Clear cartridge filter systems, providing a precise and dependable replacement. Molded from durable, chemical-resistant elastomer, the gasket forms a uniform barrier between the filter head and tank body to prevent air intrusion, water seepage, and pressure loss during operation. Its exact sizing supports smooth installation into the tank groove, helping maintain the stable internal pressure needed for efficient filtration. Designed for both residential and commercial systems, the O-305 helps preserve water clarity and overall filtration reliability through daily use.

Highlights

• CX250F-Equivalent Fit: Matches Hayward’s original Star-Clear sealing dimensions for secure, leak-free performance between the filter head and tank.

• Protects System Pressure: Helps prevent air leaks and water loss that can reduce filtration efficiency or interrupt normal system operation.

• Chemical-Resistant Construction: Elastomer formulation withstands chlorine, temperature shifts, and continuous pressure cycles without deforming.

• Easy Groove Seating: Precision-molded profile fits smoothly into the tank channel for quick, consistent installation during routine maintenance.

• Enhances Filter Output: Supports proper operating pressure, improving circulation, clarity, and overall system reliability.

Compatibility

• Hayward Star-Clear Filters

Additional Info

The Aladdin O-305 Hayward Star-Clear O-Ring replaces the CX250F head seal found on Star-Clear cartridge filter systems. This FAQ supports Wholesale Pool Mart customers who compare local pricing, check nearby stock, or prepare for scheduled filter maintenance. The O-305 restores consistent sealing between the filter head and tank body.

Compatibility and Fitment Details

Service professionals often measure and verify gasket compatibility before performing on-site work.

Is the O-305 the correct replacement for the Hayward CX250F seal?

Yes, the O-305 is molded to match the CX250F dimensions used across Star-Clear systems. If your system references that part, this O-ring is the correct fit.

Will the O-305 fit various Star-Clear tank sizes?

Yes, many Star-Clear models share the same head-to-tank sealing design. The O-305’s elastomer profile matches these grooves.

Can upgrading the head O-ring help stabilize system pressure?

Yes, a worn or flattened head gasket often causes pressure dips or poor circulation. Installing the O-305 restores airtight sealing.

Installation, Maintenance, and Service Preparation

Wholesale Pool Mart customers often purchase seals in advance of multiple service appointments.

How should a technician install the O-305 during filter servicing?

Clean the sealing surface thoroughly, apply a thin lubricant, and seat the O-ring into the groove without twisting. Reinstall the head and tighten the clamp evenly.

What problems appear when the original gasket wears out?

Issues include water seepage at the seam, fluctuating PSI, or visible air returning to the pool. A new O-305 typically resolves these failures.

How do technicians confirm the seal is functioning properly?

After reassembly, the filter should maintain stable pressure with no moisture at the head interface. Smooth, consistent flow indicates a proper seal.

Local Pricing, Stock, and Service Coordination

Wholesale Pool Mart customers often check multiple stores before finalizing their service plan.

Is the O-305 typically stocked across nearby Wholesale Pool Mart locations?

Yes, it is commonly carried due to widespread use of Star-Clear filters. Checking local pricing helps with planning multi-filter service projects.

What information should I provide when calling for availability?

Provide the CX250F reference or your specific Star-Clear filter model. This helps staff verify the correct O-ring.

Do service pros often purchase additional parts with the O-305?

Yes, many also buy filter cartridges, clamp belts, or replacement gauges during scheduled maintenance.