This is a sealing ring, made of rubber material. This sealing ring make no space between the vacuum bottle and lid, you can keep soup easily. With its simple and easy installation, you can replace your hot water bottle seal ring without the need for professional tools. 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 - Owning the and break resistance ability, very practical, with excellent texture. -The rubber sealed ring is flexible and can your bottle liner mouth well, you can install it easily. -Enough to meet your daily needs and replacements, or you can share it with your friends, family, and others who need them -Replacement sealing ring for bottle liner, sealed leak proof heat insulation, can be used for longtime. -With good elasticity, this rubber sealed ring has good elastic and flexible, much practical. Package list: 1 x rubber sealed ring