Description Toto THU092-8, THU128 & C863 Counterbalanced 3-Inch Toilet Flapper Replacement with Silicone Seals Designed to fit 3-inch one-piece and two-piece Toto toilets Includes optional, replaceable silicone seals for extended product life Simple silicone seal replacement process for easy maintenance Counterbalanced design ensures a complete and efficient flush every time Resistant to calcium buildup for long-lasting cleanliness Constructed with chemical-resistant soft polymers to maintain a perfect seal Compatible with Toto models THU092-8, THU128, and C863 We make our flush valves out of the finest Polymers money can buy. Our flappers are designed and made so you can remove and install replicable silicone seals. Most silicone seals are about $10 apiece. You can take them off and wash them in vinegar and never have to buy a flapper again.