General description The Geberit flush valve silicone rubber sealing membrane (part number 816.418.00.1) is designed to provide a reliable seal for your flush valve system. This high-quality bell seal, measuring Ø 63x32mm, ensures optimal performance and durability, making it an essential component for maintaining the efficiency of your toilet flush mechanism. Technical specifications Part number: 816.418.00.1 Bell seal dimensions: Ø 63x32mm