The Hayward XStream tank lid with lock ring is designed for compatible 100 square foot filter applications where the top closure needs replacement. A lid with lock ring is useful because it helps secure and seal the filter tank while allowing access for routine service and cartridge replacement.This replacement is especially useful when the original lid or lock ring is cracked, leaking, damaged, or no longer locking correctly. Replacing both parts together can help restore dependable tank closure and simplify maintenance.The CCX1000C is a practical service part when a compatible Hayward XStream filter needs a lid assembly to restore dependable sealing and support. Hayward XStream tank lid with lock ring Fits compatible 100 square foot filter applications Helps restore secure tank closure and sealing Useful when the original lid or lock ring is damaged or leaking Supports cleaner and more dependable filter service