Hayward KNOB WASHER (SET OF 2)

The Hayward Knob Washer (Set of 2) is a specialized hardware component designed to provide a smooth, low-friction interface between the locking knob and the filter head or dome assembly. These washers are typically manufactured from a durable, high-density thermoplastic or a corrosion-resistant metal, engineered specifically to distribute the mechanical load and compression force generated when tightening the filter system. Their primary function is to protect the surface of the filter head from abrasion while ensuring that the locking knob can be tightened or loosened smoothly without binding or seizing under high hydraulic pressure. By providing a stable bearing surface, these washers help maintain consistent tension on the internal tie rod, which is essential for preserving the vacuum-tight seal of the main tank O-ring. Designed to withstand the harsh environment of a pool pad, they remain resilient against UV exposure, extreme temperature fluctuations, and constant contact with pool chemicals. For shipping and logistical purposes, the estimated weight of the Hayward Knob Washer (Set of 2) is approximately 0.15 pounds in its retail packaging, while the actual weight of the two washers themselves is roughly 0.08 pounds.