High quality silicone oil in solvent mixture with compressed gas propane-butane. In contrast to many non-silicone products, the RP0021 has proven itself many times over under extreme conditions (e.g., to seawater, water vapor, sulfur dioxide, diluted acids and alkalis). Shake briefly before use. Apply evenly to the surfaces to be to be covered from a distance of approx. 20–30 cm, ensuring complete wetting. Flash-off time approx. 30 s at room temperature.