OEM Hayward Locking Knob O-Ring CX250Z7 is an authentic replacement component engineered for use with Hayward Star-Clear and Star-Clear II cartridge filters, providing a watertight seal at the locking knob to support the filtration system's efficiency. Manufactured from premium-grade, heavy-duty materials, this O-ring delivers long-term durability and reliable performance under demanding conditions. Replacing worn or damaged O-rings with the CX250Z7 model helps prevent leaks, preserving system integrity and ensuring consistent filter operation across pool environments.

• Authentic Replacement: Specifically engineered for Hayward Star-Clear and Star-Clear II cartridge filters to maintain proper system operation

• Watertight Performance: Forms a secure and reliable seal at the locking knob to prevent leaks and maintain consistent pressure

• Durable Material Construction: Made from premium, heavy-duty materials to deliver strength, resilience, and long service life

• Preserves Filter Efficiency: Helps ensure optimal filtration performance by maintaining the system's internal integrity

• Leak Prevention: Critical for preventing water loss, operational downtime, and costly maintenance issues

• (1) O-Ring

• Hayward Star-Clear Cartridge Filters
• Hayward Star-Clear II Cartridge Filters

Replacement O-Ring for Hayward Filters

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Filter Maintenance and Troubleshooting

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O-Ring Fit and Performance

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