Perfect New Fish Tank Aquarium FULL SET FILTER ALL O-Rings SET PERFECT/SUNSUN/GRECH/SUPER/AQUATOP/ MODEL HW-302 CF300 O-RING REPLACEMENT KIT Perfect New Fish Tank Aquarium FULL SET FILTER O-Rings PERFECT/SUNSUN/GRECH/SUPER/AQUATOP/ MODEL HW-302 CF300 Made from the finest materials Fits for HW-302/CF300 canister filter Features with high quality components It will only use when current gasket is succumbs to wear and tear