[Solving Your Toilet Flush Valve Leak] Slow leaks and phantom flushes can be frustrating, causing noise and water waste. This occurs because the toilet valve seal wears out over time and needs replacement. To restore your toilet's quiet operation, improve flush pressure, and avoid those high monthly water bills with our american standard toilet parts. [Quick and Easy Installation] You don't need professionals or to dismantle the toilet base to replace the american standard flush valve. Follow installation steps images; it takes just a few minutes to install and restore your toilet's tranquility. [Premium Silicone Material] Our toilet flush valve seal is crafted from high-quality silicone material, offering better resistance to chlorine and other chemicals in the water compared to regular rubber seals. It lasts longer, resists deformation, and doesn't bubble. Outer diameter: 4.25 inches, inner diameter: 2.67 inches. [Great Compatibility] Perfect replacement for the widely used Champion 4 tank standard 7301111-0070A flushing valve seal and gasket repair kit. Compatible with American Standard Champion 4 and Eljer Titan 4 toilet models. [Installation Video for Toilet Seal] If you're unsure how to replace this toilet seal component, contact us through Amazon for an installation video. We'll respond within 0.5 to 6 hours upon receiving your message.