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

The Aladdin O-305 Hayward Star-Clear Filter Head O-Ring is a precision-fit replacement engineered to match the original Hayward CX250F seal used on Star-Clear cartridge filter systems. Molded from durable, chemical-resistant elastomer, it provides a tight, consistent seal between the filter head and tank body, preventing air leaks, water seepage, and pressure loss during filtration. Its exact sizing ensures smooth installation, helping maintain proper system pressure and efficient water clarity across residential and commercial pool setups.

Highlights

• Direct CX250F Replacement: Matches original Hayward Star-Clear dimensions for a secure, leak-free seal between the tank and filter head.

• Maintains Proper Pressure: Prevents air intrusion and water leaks that can reduce filtration efficiency or disrupt system performance.

• Chlorine-Resistant Elastomer: Built to withstand pool chemicals, heat, and pressure cycles without hardening or deforming.

• Easy Installation Fit: Seats cleanly into the tank groove for fast, consistent sealing during routine filter maintenance.

• Supports Filter Efficiency: Helps maintain stable pressure and cleaner circulation for improved clarity and system reliability.

Compatibility

• Hayward Star-Clear Filters

Additional Info

The Aladdin O-305 Hayward Star-Clear Filter Head O-Ring replaces the original CX250F seal used on Star-Clear cartridge filters. This FAQ helps walk-in customers at Discount Pool Mart confirm compatibility, understand installation steps, and troubleshoot pressure-loss issues before picking up the O-305 in store. These details support a watertight, airtight seal that helps maintain proper filtration performance.

Compatibility and Fitment

Many walk-in customers bring older Star-Clear filters to Discount Pool Mart looking for the correct head gasket. This section helps confirm that the O-305 is the proper match.

How can I tell if the O-305 fits my Hayward Star-Clear filter?

Look for the CX250F reference on your filter label or manual. If your filter uses this gasket between the tank body and head, the O-305 is the correct replacement. Bringing photos to the store helps staff verify quickly.

Does the O-305 work on both older and newer Star-Clear systems?

Yes, Hayward kept the sealing dimensions consistent across Star-Clear generations. The O-305 seats properly in the same groove design.

Can replacing the O-305 fix low pressure or air entering the filter?

Often yes. A worn head O-ring is a common cause of pressure loss, bubbles in the pump basket, or uneven flow. Installing the O-305 restores a dependable seal.

Installation and Troubleshooting

Walk-in customers often need quick guidance on how to seat the O-ring correctly and how to identify sealing issues.

How do I install the O-305 during maintenance?

Clean the tank groove, lightly lubricate the O-ring, and seat it evenly before reinstalling the filter head. Tighten the clamp or bolts uniformly to create balanced compression.

What symptoms indicate my old CX250F seal has failed?

Moisture around the tank seam, hissing under pressure, or unstable PSI readings suggest O-ring wear. Replacing it usually resolves these issues.

How can I confirm the new O-ring is sealing properly?

The filter should hold steady pressure without leaks or air intrusion. Stable circulation and clear water indicate proper sealing.

In-Store Pickup and Local Guidance

This section supports Discount Pool Mart customers preparing for their visit.

Is the O-305 typically available for same-day pickup at Discount Pool Mart?

Yes, Star-Clear systems are common, so this O-ring is regularly stocked. Calling ahead is recommended.

Should I bring my old O-ring or filter photos for verification?

Yes, bringing the old gasket or a clear photo helps staff confirm compatibility quickly and accurately.

Do customers usually purchase additional items with the O-305?

Yes, many pick up replacement cartridges, pressure gauges, or clamp hardware during filter service.