As a result of summer heat, moisture penetration, continuous influence of cold temperatures, the rubber door seals dry up, crack, lose their elasticity and cannot continue performing their main function – sealing of door and trunk clearances. When the car is driving, unwanted sounds occur by the doors, and it is even possible that moisture will accumulate on the floor of the passenger compartment and trunk. To avoid malfunctioning of rubber seals, they need constant care all year round. Regular treatment of seals with special products will allow them to continue proper functioning over the whole period of vehicle operation.