Astral Pool Terra & Cel Filter Buna-N O-Ring (4404210302) stenner Replacement is often appropriate when

Replacement is often appropriate when the original tee is cracked

this filter cartridge helps support cleaner water and more dependable everyday filtration results

This replacement is especially useful when the original fitting is damaged

a matched system approach can help support a more complete refresh

The Waterway 550-4407 Crystal Water tank body is designed for compatible filter applications and comes in gray with the label included

Astral Pool Terra & Cel Filter Buna-N O-Ring (4404210302) stenner Replacement is often appropriate whenThe Astral Pool Terra and Cel filter O ring is designed for compatible filter applications where a Buna N seal is needed at a critical connection point. An O ring like this is useful because it helps maintain leak resistance between assembled components, supporting cleaner operation and a more dependable filter body connection. This replacement is especially useful when the original seal is flattened, brittle, stretched, or no longer holding