Main functions: Seal the connection between the fill valves and the water supply system or internal component of the fill valves, ensuring a tight seal to prevent leaks, which help maintain proper valves operation and avoid water wastage. With its precise design, it offers a seamless installation experience and guarantees perfect performances. Make from plastic materials to bear frequent use and maintain a reliable seal over time. Effectively reduces water flows noise, enhancing the overall efficiency of and contributing to a more enduring and efficient toilet system. A good seal minimizes maintenance requirements caused by leaks or damage, thereby reducing maintenance costs and frequency. Specifications:M9911 Color: As Shown Material: plastic Package Contents: 3 x Toilet Fill Valves Diaphragm Washers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.