CB40 is a type of carbon black, a material produced from the incomplete combustion of hydrocarbons. It is primarily used as a reinforcing agent in rubber products, such as tires, to enhance durability and performance. CB40 is known for its fine particle size and high surface area, which contribute to its effectiveness in various applications. In addition to rubber, CB40 is also utilized in plastics, coatings, and inks. Its properties help improve the strength and stability of these materials, making it a valuable component in many industrial processes. The versatility of CB40 makes it an important material in the manufacturing sector.