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Fluval 303 Ring Gasket for Filter Case 160 mm - REPLACE ANNUALLY To Prevent Failure
160 mm Rubber O-Ring for sealing the motor head unit to the filter case in the Fluval 303 Model.
Does not fit Fluval 304 or 305. For Fluval 303 ONLY.
The manufacturer recommends replacing this item annually for optimum filter performance.
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