Poly-tert-butylphenol disulfide is primarily used as a stabilizer and antioxidant in various industrial applications, particularly in the rubber and polymer industries. It helps to prevent the degradation of materials caused by heat, oxidation, and mechanical stress, thereby extending the lifespan of products. This compound is also employed in lubricants and greases to enhance their thermal stability and reduce wear and tear. Additionally, it finds use in the production of adhesives and sealants, where it improves resistance to environmental factors and maintains performance over time. Its ability to act as a crosslinking agent further enhances the mechanical properties of elastomers and plastics.