The sealed ring is not only practical but also sturdy. Made from rubber material, it is built to withstand the test of time. Unlike other seals that may deteriorate over time, this accessory is resistant to aging, ensuring longtime using. Features -Color:White -Material:Rubber -Size:5.70X5.70X1.40cm/2.24X2.24X0.55in - Inner Diameter: 3.7cm/1.45in - Suitable for 3.2L Vacuum Bottle - With this hot water bottle accessory, preventing leaks and ensuring a experience. - Compatible with most brands of liner hot water bottle, making it a convenient and practical addition. - The material is safe and light, which is wear resistance and practical for the lasting time use. -The construction of this hot water bottle accessory extends the lifespan of your hot water bottle. -Enjoy easy installation without the need for professional tools, allowing you to quickly and effortlessly replace your old or worn-out sealed ring. Package list: 1 x rubber sealed ring