Description This hot water bottle liner mouth ring accessory is a must-have for anyone who wants to prevent leaks and spills. It offers superior sealing performance that keeps your hot water bottle from leaking. Its unique design makesit convenient to install. 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 -Made of good rubber material makes it has high elasticity to ensuring efficient sealing. - Flexible and supple, this rubber sealing ring is easy to install and remove, seal perfectly. - Good rubber material makes it touch with the Vacuum Bottle Liner Mouth directly, and practical. - Effective sealing, with this ring, you can bottle more easily. Keep your food clean and fresh, easy to use, and easy to prevent spills. - It's simple and convenient installation, practical using, also a fine Vacuum Bottle sealing accessory. Package list: 1 x rubber sealed ring