This product is designed to provide a reliable seal for side-entry toilet fill valves, ensuring a leak-proof performance. The black rubber construction offers durability and flexibility, making it an ideal replacement part for older toilet models. Its easy installation process allows users to quickly restore their toilet's functionality without professional assistance. Features -Color:Black -Material:Plastic, rubber -Size:2.70X2.70X1.50cm/1.06X1.06X0.59in -Inner diameter: 23 mm -Reliable seal: the rubber seal ensures a reliable seal for the toilet tank, preventing unnecessary leaks and constant refilling, which helps save costs over time -great material: made from rubber and plastic, these replacement seals are highly resistant to moisture, pressure, and other environmental impacts, ensuring performance -Universal compatibility: suitable for float valves and compatible with various old style toilet tank fill valves, providing a universal solution for multiple toilet models -Easy installation: designed for easy installation by nonprofessionals without the need for professional help or special tools -Excellent sealing: the precise fit and high flexibility of the rubber material ensure excellent sealing, preventing water escape and reducing refill noise for quieter and more efficient tank use Package list: 2 x toilet tank sealing ring