The Hayward EasyClear filter cover O-ring is designed for compatible filter applications where the cover needs dependable sealing against the body. An O-ring like this is useful because it helps maintain a cleaner seal at the lid connection, supporting more reliable filtration and easier service access.This replacement is especially useful when the original O-ring is flattened, brittle, cracked, or leaking. Replacing it can help restore the condition of the filter cover connection and improve confidence in the assembly.The CX400G is a practical replacement part for compatible Hayward EasyClear filters that need renewed cover sealing and cleaner long-term performance. Hayward EasyClear filter cover O-ring Designed for compatible filter cover applications Helps restore dependable lid sealing Useful when the original O-ring is worn or leaking Supports cleaner and more dependable filter operation