The Cascade 1200 & 1500 Motor Unit Gasket replaces old, worn out or cracked motor gaskets in the Cascade 1200 (CCF4UL) and 1500 (CCF5UL) aquarium canister filters.
As gaskets get older, pressure and wear-and-tear cause them to lose their snugness. Replace misshapen gaskets to maintain a water-tight fit.
This gasket only works for the Cascade 1200 and 1500 model filters. Other models will require different gaskets.