Cato Flapper Plastic. Original parts ensure performance and water saving of your toilet. This Toilet Tank Flapper features Plastic construction. This flapper is designed to hold up even where chlorine and hard water is present. Features Original parts ensure performance and water saving of your toilet. This Toilet Tank Flapper features Plastic construction. This flapper is designed to hold up even where chlorine and hard water is present. Specifications Finish, Black. Material: Plastic. This toilet flapper replacement has been carefully polished, and the surface is smooth and burr-free, so you don’t have to worry about scratching your hands. This is a universal toilet flapper for 3 inch toilet flappers. Save water and gives a better flush. Our toto toilet flapper replacement has a high sealing value. High-quality red rubbery-toto universal flapper is also resisting chlorine and germs.