What is hard rubber?

Hard rubber, also known as ebonite, is a type of rubber that has been vulcanized to achieve increased hardness and durability. It is commonly used in applications requiring electrical insulation, such as in electrical components, as well as in products like combs and Musical Instruments. The material is characterized by its dark color, resistance to chemicals, and ability to maintain shape under stress. Hard rubber is less flexible than standard rubber, making it suitable for specific industrial and consumer uses.