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MG Chemicals 422C – Silicone Conformal Coating

Experience the ultimate protection for your circuit boards with MG Chemicals 422C Silicone Conformal Coating. This one-part acrylic-silicone blend offers superior moisture protection, wide-range service temperature, and flexibility. It delivers a durable, flexible, and smooth finish, ready to handle in just 10 minutes. Ideal for applications involving a wide temperature range, it minimises stress on components during thermal cycling. Whether you’re looking for a first-person view conformal coating or waterproofing solution for remote systems like drones and RC cars, MG Chemicals 422C is your go-to choice. Also available in spray and pen formats, it’s easy to apply and can be soldered through for repair or rework, making it a unique solution in the market. Explore MG Chemicals 422C today, and give your electronics the protection they deserve.

MG Chemicals 422C – Silicone Conformal Coating

Product Description

The MG Chemicals 422C is a premium, single-part, acrylic-silicone blend conformal coating that is known for its exceptional waterproofing abilities. This innovative product cures to a sturdy, flexible and smooth finish, making it a reliable choice for a wide range of applications. Its ease of application and fast curing time of just 10 minutes make it a user-friendly solution for both professionals and hobbyists alike. In cases of repair or rework, the coating can be readily removed with suitable strippers or soldered through without causing damage.

Key Features and Properties

Highly Versatile: The 422C is a conformal coating that is not only easy to apply but also performs exceptionally well across a broad temperature range. It is designed to put minimum stress on components during thermal cycling, allowing it to withstand extreme temperature changes without compromising its protective qualities.

Robust Protection: This product is engineered to provide potent protection against various threats including moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge. Such comprehensive protection ensures the longevity and reliability of your electronic components.

Convenience: For added convenience, this product is also available in spray and pen formats to suit different application needs.

Certification: This product has been certified UL94 V-0 (File# E203094), ensuring its compliance with the highest safety standards.

Temperature Resistance: It has a maximum service temperature of 200 °C, making it suitable for applications that experience high temperatures.

Fast Cure: With a fast cure time, it becomes tack free in approximately 10 minutes and dries in 20 minutes at 65 °C [149 °F], enabling you to save time during application.


The MG Chemicals 422C is an excellent choice for various applications. It serves as an effective first-person view (FPV) conformal coating, making it perfect for protecting and waterproofing remote systems like drones and remote-control cars. Additionally, its high corrosion resistance makes it suitable for use in environments where electronic components may be exposed to corrosive elements. It also fluoresces under UV-A light and is validated for selective robotic coating equipment, further broadening its range of applications.

Additional Options

For those seeking a UL 746E-certified acrylic conformal coating, we recommend you consider the 419E. We also offer a range of other conformal coatings to cater to diverse needs, including epoxy (4225), polyurethane (4223F), and UV-curable (4200UV) options.

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