A secure filter tank lid is essential for keeping a DE filtration system sealed, serviceable, and operating as intended. This platinum Hayward tank lid is made for compatible Perflex EC40 and EC50 filter applications, providing a replacement for a lid that is cracked, weathered, leaking, or no longer seating correctly.Because DE filters operate under pressure, the lid should be matched carefully to the exact filter model and inspected during installation with the related gasket and hardware. Replacing a worn tank lid can help restore confidence in the filter body, improve serviceability, and extend the useful life of the overall filtration setup. Replacement platinum tank lid for compatible Perflex EC40/EC50 filters Helps maintain a secure pressure-side filter seal Useful for cracked, aged, or leaking tank lid replacements Pairs with proper gasket and clamp hardware for safe operation Confirm EC40 or EC50 compatibility before installation