Unicel C-7698 – 100 sq ft Replacement Pool Filter Cartridge
Product Overview
The Unicel C-7698 is a high-quality replacement cartridge designed for residential pool and spa filter systems. Built with premium pleated polyester media and durable molded end caps, it provides efficient filtration, long service life, and consistent water clarity. This model replaces the original 100 sq ft filter elements found in several popular pool filters from Hayward, Pentair, Sta-Rite, and others.
Key Features
- 100 sq ft of filtration area for superior debris removal and longer filter cycles.
- Durable Reemay-style spunbond polyester media withstands chemicals and repeated cleanings.
- 145 pleats maximize surface area and maintain steady flow rates.
- Open 3″ end caps with molded gaskets for quick, leak-free installation.
- Heavy-duty core supports high flow and resists collapse under pressure.
Technical Specifications
- Part Number: C-7698
- Filtration Area: 100 sq ft
- Outside Diameter: 7″
- Length: 29-7/16″
- Inner Diameter: 3″ (open both ends, gasketed)
- Pleat Count: Approximately 145 pleats
- Media: Reemay-style polyester fabric
Compatible Filter Models
- Hayward Star-Clear Plus C1000 (CX1000RE replacement)
- Sta-Rite PXC-95 / PXC-95-4
- Pleatco PA100
- Filbur FC-1299
- Aladdin 19903
- OEM Replacement: Hayward CX1000RE
Cross-Reference Part Numbers
- Pleatco: PA100
- Filbur: FC-1299
- Aladdin: 19903
- Hayward: CX1000RE
- Unicel: C-7698
Applications & Compatibility
The C-7698 fits 7″ diameter by 29-7/16″ filter housings that use 100 sq ft cartridges. It is commonly found in Hayward Star-Clear Plus C1000 and equivalent cartridge filter systems. This replacement element restores optimal flow and filtration performance, ensuring clean, balanced water with minimal maintenance.
Installation Instructions
- Turn off the pump and relieve system pressure before opening the filter tank.
- Remove the old cartridge and rinse the filter housing thoroughly.
- Inspect the O-ring and tank seal; replace if worn or cracked.
- Insert the new C-7698 cartridge, ensuring it is properly seated in the lower and upper manifolds.
- Reassemble the tank, restart the system, and check for normal operating pressure and flow.
Troubleshooting
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High pressure after cleaning: Verify cartridge pleats are fully expanded and free of trapped debris.
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Low flow or cloudy water: Ensure correct cartridge size and inspect for torn or damaged pleats.
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Leaks around tank lid: Check and lubricate the lid O-ring for proper sealing.
Maintenance Tip
Rinse the cartridge monthly or more often in heavy debris conditions. Deep clean every few months using a cartridge cleaner to dissolve oils and scale buildup. Replace the cartridge annually or if pleats become permanently deformed or discolored. Keeping your C-7698 in good condition ensures your pool water remains clean, clear, and well-balanced year-round.
