3-IN-ONE® RV Care Window & Track Dry Lube dries to a clear, long-lasting, solid film of lubricant to keep windows and doors running smoothly. Doesn’t attract dirt or debris and safeguards against rust and corrosion. Safe for use on metal, wood, vinyl and most plastics (except clear polycarbonate and polystyrene). Ideal for use on tracks, jambs, rollers, frames and hinges. WD-40 Multi-Use Product's lubricating ingredients are widely dispersed and hold firmly to all moving parts.