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Hayward SX220Z2 – Bulkhead & Diffuser O-Ring (Large Seal)
Product Overview
The Hayward SX220Z2 is a large replacement O-ring designed for use in select in-ground pool filters and pumps. It is engineered to provide a reliable seal in critical areas like bulkheads and diffuser ports, helping to prevent leaks and maintain optimal hydraulic performance.
Key Features
- Designed for bulkhead or diffuser sealing in compatible Hayward filter and pump systems.
- High-quality elastomer construction to resist chemical exposure, temperature fluctuations and pool environment stress.
- Precision molded to OEM dimensions for proper fit and effective sealing.
- Available as an individual seal replacement—provides cost-effective service solution.
Technical Specifications
- Part Number: SX220Z2
- Application: Bulkhead O-ring / diffuser seal for compatible models
- Approximate Inside Diameter: ~2½″
- Approximate Cross Section: ~3/16″ thickness
- Material: Chemical-resistant elastomer seal
Applications & Compatibility
This O-ring fits a variety of Hayward equipment including cartridge filters, D.E. filters and certain pump models where the OEM parts list shows part number SX220Z2. It is commonly used in bulkhead sealing applications for tanks and pump internal assemblies. Confirm your equipment’s model and seal location before ordering.
Installation Instructions
- Turn off the pump and relieve system pressure completely before servicing equipment.
- Remove the old O-ring and thoroughly clean the sealing surface to remove debris or build-up.
- Inspect the groove or seat area for damage, then place the new SX220Z2 O-ring into position ensuring it is seated evenly and flat.
- Reassemble the unit and restore flow; check for leaks or abnormal operation during startup.
Troubleshooting
- Leak at bulkhead seam: Verify the O-ring is fully seated and the sealing surfaces are clean and undamaged.
- Reduced flow or bypass: A degraded or mis-seated O-ring may allow bypass flow—replace and reseat properly.
- Seal extrusion or damage: Ensure the groove is not distorted and the correct O-ring size (SX220Z2) is used.
Maintenance Tip
Inspect the seal during your annual equipment service. If the O-ring shows signs of flattening, cracking or chemical damage, replacing it proactively with the SX220Z2 helps maintain proper sealing and extend equipment life.
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