Hayward SX200K Dome Lid Replacement for S200 & S240 Sand Filters
The Hayward SX200K is a genuine replacement filter dome lid used on select Hayward S200 and S240 series sand filters. This threaded dome-style lid seals the top opening of the filter tank and includes the molded features needed for proper fit and reliable closure.
Key Features
- Part Number: SX200K
- Brand: Hayward
- Type: Sand filter dome lid / closure dome
- Color: Black
- Mounting Style: Threaded (large buttress threads)
- Common Use: Hayward S200 and S240 series sand filters
Approximate Dimensions (For Verification)
- Outside Diameter (at flange): approx. 7-1/2″
- Outside Diameter (at threads): approx. 6″
- Height: approx. 3-5/8″
Common Reasons to Replace
- Cracked dome lid or damaged threads
- Persistent seepage or air entry at the lid area (after confirming O-ring/gasket condition)
- Worn or deformed lid that no longer seats evenly
- Missing lid after service or seasonal storage
Installation Notes
- Confirm your filter model is an S200 or S240 series and compare lid thread style before ordering.
- Clean all sealing surfaces and remove sand/grit before reinstalling the lid.
- Do not overtighten—hand-tighten to a firm seat to avoid warping or thread damage.
- If your system uses a separate O-ring/gasket for the lid, inspect and replace it if flattened or cracked.
Related Products
- Hayward SX200K Dome Lid
- Hayward S200 Sand Filter Parts
- Hayward S240 Sand Filter Parts
- Hayward SX200Z7 Tank O-Ring / Seal
- Hayward SX200Q Threaded Lateral
- Pool-Safe Silicone O-Ring Lubricant
Maintenance Tips
- Keep the lid sealing area clean—sand and debris on sealing surfaces are a common cause of leaks.
- Inspect the lid threads and sealing surfaces during seasonal service.
- Use only pool-safe silicone lubricant on O-rings (if applicable) and avoid petroleum-based products.
- If the lid becomes difficult to seat, check for cross-threading, debris, or a worn seal before forcing it.
