WD-40 Specialist® Silicone Spray provides long-lasting protection and lubrication to prevent rubber and plastic parts and surfaces from cracking, splitting or ageing, keeping them looking like new. WD-40 Specialist Silicone spray also reduces any sticking, friction or wear on moving components. It provides excellent waterproofing and protection against moisture and easily repels any dust or dirt with its fast-drying, clear and non-staining film.