Efficient compatibility with 3 inch flow valves - Specially designed for 3 inch flow valves, this seal solves common flush valve problems through an optimal fit. It provides stable and reliable operation with every rinse and prevents leaks. Quick repair for cistern leaks - Fixes leaks within minutes thanks to a precise fit that optimizes water flow with every flush. Helps reduce water consumption and waste. No special tools required. Wear protection for long-term performance - Optimized PVC composition reduces material abrasion and maintains constant closure pressure through daily use, supporting durable, reliable operation. Time-saving 3-stage replacement system - Requires no special plumbing knowledge. The innovative mechanism guarantees stable toilet flush with minimal time and effort, and is easy to use for all user groups. Use scenarios - Residential bathroom maintenance When a toilet cistern leaks or the flush valve seals wear, install to stop leaks and improve flush efficiency in homes, apartments, and condominiums. - Multi-unit buildings and hospitality Quick repairs in rental units, hotels, or office restrooms to minimize downtime and reduce water waste. - Retrofit and replacement projects Ideal for upgrading aging flush valves in existing installations with 3 inch flow valves, ensuring compatibility and reliable performance.