Hayward FILTER LOCK RING 12IN

Hayward Filter Lock Ring 12 in (Open Line) is a replacement clamp‑style locking ring used on certain Hayward pool filter housings to secure the filter lid to the tank. It threads around the tank flange (or slides over, depending on the filter design) and compresses the lid’s O‑ring to form a watertight seal under pressure — preventing leaks and ensuring safe operation. The locking ring provides a strong, even hold around the lid’s circumference, distributing sealing pressure uniformly and helping resist the stresses caused by water pressure inside the filter. Because of its design, it also allows easier lid removal for maintenance or filter changes, as you can unscrew the ring rather than unglue or cut pipes. When properly installed and aligned, the lock ring ensures reliable, leak‑free operation and supports the longevity of the filtration system.