Compatible with Fluval FX4, FX5, FX6 high performance canister filters.
The A20212 o-rings (also called seal rings or gaskets) are found on the two click-fit fittings where the valves and hoses connect to each side of the filter lid.
Pack contains four (4) o-rings.
Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA!
