Used as a tackifier in adhesives, providing strong bonding properties while maintaining flexibility. Commonly found in pressure-sensitive adhesives for tapes, labels, and medical patches. Acts as a sealant in automotive and construction applications due to its excellent moisture and gas barrier properties. Employed in chewing gum base for its elasticity and insolubility. Also used in lubricants and fuel additives to improve viscosity and reduce engine deposits. Its low permeability makes it ideal for tire inner liners to retain air pressure.