This product is great for those looking to replace worn-out or seal rings in their toilet's side-entry fill valve. The black rubber material offers durability and flexibility, ensuring a secure fit and preventing leaks. Its easy installation process makes it a convenient choice for maintaining the optimal performance of your toilet system. Features -Color:Black -Material:Plastic, rubber -Size:2.70X2.70X1.50cm/1.06X1.06X0.59in -Inner diameter: 23 mm -Leak prevention: the rubber seal effectively prevents leaks, ensuring the toilet tank remains sealed and reducing water wastage -Robust material: made from great rubber and plastic, these seals offer exceptional resistance to wear, ensuring durability -Universal application: compatible with a wide range of old-style toilet tank fill valves, making them a practical addition to any household -Simple to install: the design allows for straightforward installation without the need for tools or professional assistance -Enhanced sealing: the precise fit and flexibility of the rubber material ensure a secure seal, minimizing water noise and improving tank efficiency Package list: 8 x toilet tank sealing ring