LID O-RING 12IN

The Hayward Strainer Cover O‑Ring is a circular rubber/gasket seal that sits between the strainer cover (lid) and the pump housing in a pool pump. Its job is to compress when the lid is closed, creating a tight, watertight seal that prevents water leaks and air from being drawn into (or escaping from) the pump assembly. This seal is vital for preserving pump prime — if the O‑ring is worn, cracked, or improperly seated, the pump may lose suction or leak, reducing efficiency and risking damage to the system. Because pool pumps operate in water with chemicals and under pressure, the O‑ring is made from a durable, chemical‑resistant elastomer that resists degradation, maintains elasticity over time, and withstands repeated cycles of opening and closing the cover. If maintained (cleaned and lightly lubricated when reinstalled), the O‑ring helps keep the pump reliable, leak‑free, and efficient through many seasons of use.