Conformal coating material is a thin polymeric film which conforms to the contours of a printed circuit board to protect the board's components. It is applied to electronic circuitry to protect against moisture, dust, chemicals, and temperature extremes. Coatings can be applied in a number of ways, including brushing, spraying, dispensing and dip coating. Furthermore, a number of materials can be used as a conformal coating, such as acrylics, silicones, urethanes. Each has their own characteristics, making them preferred for certain environments and manufacturing scenarios.