Features:* Perfect Seal for Toilet: Our toilet flange wax ring provides a reliable and waterproof seal for toilet installation and repair projects.* THICK WAX RING: Our product is designed with a high-quality thick wax bowl ring that ensures excellent adhesion and creates a tight seal to prevent water leakage and gas escaping.* Anti-backflow design: The integrated anti-backflow valve effectively prevents water from flowing back, eliminates the gas caused by backflow, and keeps the bathroom environment fresh.* EASY INSTALLATION: Our toilet flanges are designed for simple, hassle-free installation. The user-friendly design allows anyone to easily install and replace the flange and wax ring, saving you time and energy.* Reliable and Durable: Our toilet wax ring gasket is made of high-quality materials to ensure long-lasting performance and durability. You can trust our products to provide a safe, leak-free seal for years.Specifications:* Product Name: Toilet Flange Wax Ring with Backflow Prevention Valve* Material: Rubber + Plastic* Size: 125 x 125 x 80 mm* Color: Black, GreyPackage Content:1 x Flange Check ValveNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.