1,2,3-Triphenylguanidine is primarily used as a vulcanization accelerator in the rubber industry. It helps in the process of converting natural or synthetic rubber into more durable materials by facilitating cross-linking between polymer chains. This chemical is particularly effective in improving the mechanical properties of rubber products, such as elasticity, strength, and resistance to wear and tear. Additionally, it is employed in the production of various rubber goods, including tires, seals, and gaskets, where enhanced performance and longevity are essential. Its role as an accelerator also contributes to reducing the curing time during the manufacturing process, making it a valuable component in industrial rubber applications.