Hayward CX900F Filter Head O-Ring Replacement for Hayward Star-Clear Plus Cartridge Filter Series and Separation Tank

Confirm Your Filter Model Before Ordering This Seal

CX900F is the filter head O-ring, the seal between the head and the tank on Hayward Star-Clear Plus cartridge filters. The listing fits it to the Star-Clear Plus cartridge filter series and separation tanks, so check your filter’s model label before ordering; if your unit is not in that group, do not assume this ring matches.

Ordering Tips

• The name identifies the exact component: compare against your filter’s parts list rather than any other seal in the housing.
• Matching the printed part number CX900F to your old O-ring is the quickest way to avoid ordering a similar-looking but wrong ring.

Source: Amazon listing for Hayward CX900F filter head O-ring