Hayward O-RING FOR FILTER HEAD

The Hayward O-Ring for the filter head is a critical sealing gasket engineered to create a pressurized, watertight barrier between the filter head (or multi-port valve) and the main filter tank body. Manufactured from a high-performance synthetic elastomer, such as nitrile rubber or EPDM, this component is designed to remain flexible and resilient despite constant exposure to UV rays, extreme temperature fluctuations, and the corrosive effects of pool chemicals like chlorine and salt. Its primary mechanical function is to prevent leaks at the tank's main junction, ensuring the pump maintains its hydraulic prime and that the internal pressure remains stabilized for effective filtration. As the filter head is tightened, the O-ring compresses into a precision-machined groove, forming a vacuum-tight seal that can withstand the significant expansion and contraction cycles the tank undergoes during standard operation. For shipping and logistical purposes, the estimated weight of a standard Hayward Filter Head O-Ring is approximately 0.3 pounds in its retail packaging, while the actual dry weight of the rubber ring itself is roughly 0.2 pounds.