Hayward O-Ring for ProSeries 23" Sand Filter W3S200 | SX200Z3 UHDSR50 If your existing cable assembly

If your existing cable assembly has failed or become damaged

which are a common secondary cause of sand returning to the pool

Fully programmable control with a self-contained 24-hour clock and up to 8 custom speed/timer functions with day-of-week scheduling

When servicing the heat exchanger

The Hayward Check Valve (ECX4077B1) is the OEM replacement check valve for select StarClear cartridge filters and Perflex Extended-Cycle DE filters

Hayward O-Ring for ProSeries 23" Sand Filter W3S200 | SX200Z3 UHDSR50 If your existing cable assemblyThe Hayward O Ring (SX200Z3) is the OEM replacement sealing O ring for the ProSeries 23" Top Mount Sand Filter. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based lubricant before installation to ensure a proper seal and prevent premature cracking. Browse our Pool Plumbing Lubricants for a compatible silicone lubricant. This O ring maintains a watertight seal at its designated seating point on the