Hayward SX220Z2 Large O-Ring

What This Part Is Used For
The Hayward SX220Z2 is a large O-ring used on compatible Hayward sand filters. It seals a major joint on the filter assembly, typically at a tank seam or top closure connection where the filter is opened for service. This seal is located on the filter body on the equipment pad.

Why This Part Matters
A large tank O-ring is one of the most common leak points after a filter has been opened. If it is flattened, nicked, or out of position, the filter can drip or spray under pressure. Replacing the correct large O-ring restores a reliable seal and reduces repeat service calls. It also helps prevent overtightening clamps and hardware trying to stop a leak.

Key Features and Specifications

• Manufacturer part number: SX220Z2
• Large O-ring seal for compatible Hayward sand filters
• Used to seal major filter joints during operation
• Common replacement item during sand changes and filter service
• Helps prevent leaks at the filter seam or closure area

Installation and Fitment Guidance
Relieve all filter pressure before opening the tank or loosening clamps. Clean the sealing surface and seat the O-ring evenly so it does not pinch during reassembly. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures complete residential pool systems including pumps, filters, heaters, automation controls, cleaners, chlorination systems, and service parts. Their sand filters are widely installed and supported with serviceable seals and internal components for long term maintenance. This compatibility helps technicians keep filtration consistent without replacing complete equipment. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace large O-rings after a sand change, when a filter seam starts leaking, or when the O-ring is visibly flattened and stretched. It is often identified when the filter drips only while running or immediately after reassembly.