General description The Toilet Flush Flange Wax Ring with Built-in Check Valve is an improved sealing solution designed to prevent backflow and leaks in your toilet system. It features a backflow preventer that effectively stops the backflow of wastewater, ensuring a clean and odor-free bathroom. Technical specifications Internal diameter compatibility: 110 mm Material: Butter glue Installation Designed for easy installation Simply follow the instructions and snap it into place for a secure connection Usage Prevents unpleasant odors and leaks Keeps the bathroom clean and dry