TOP LID LOCKING RING

The Hayward Top Lid Locking Ring is a structural part designed to secure the lid of a pool or spa filter housing to its base in a leak‑tight, pressure‑safe way. It replaces or reinforces the clamp-style locking mechanism commonly used on filters, forming a tight join between the filter tank and lid when properly seated. As the locking ring is tightened — often by hand — it compresses the lid’s sealing O‑ring against the housing, ensuring a watertight seal under the normal operating pressures of the filtration system. The ring also helps distribute pressure evenly around the lid flange and often includes safety‑locking clips or tabs to prevent accidental opening, which enhances safety when the system is under pressure. Once installed and locked, the ring ensures the filter can operate correctly without leaks, maintaining proper flow, pressure, and filtration efficiency.