A Rubber Cone is a laboratory accessory used in filtration assemblies to securely connect a Buchner funnel with a filter flask. It is made from high-quality rubber, providing flexibility, durability, and an airtight seal during vacuum filtration procedures.The conical shape allows the rubber cone to fit tightly between the neck of the filter flask and the stem of the Buchner funnel, ensuring proper alignment and preventing leakage of air during filtration. This helps maintain effective vacuum pressure and improves the efficiency of the filtration process.Rubber cones are chemically resistant, reusable, and easy to handle,