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MG Chemicals 422B – Silicone Modified Conformal Coating

Discover the MG Chemicals 422B – Silicone Modified Conformal Coating, a game-changer in industrial-grade protection. This 1-part, acrylic-silicone blend conforms and cures to a durable, flexible, and smooth finish, providing exceptional protection against moisture, corrosion, and high-voltage arcing, amongst other elements. With its fast curing time and high-temperature service, MG Chemicals 422B is made for applications that demand both flexibility and resilience. Experience enhanced efficiency, durability, and performance in your industrial systems and equipment. Take your protection to the next level with MG Chemicals 422B. Explore its potential today!

MG Chemicals 422B – Silicone Modified Conformal Coating


The MG Chemicals 422B is a versatile, high-performance, 1-part conformal coating product composed of an acrylic-silicone blend. This high-quality coating delivers a smooth, durable, and flexible finish, making it an ideal choice for a variety of applications. It is designed for ease of use and efficiency, with a curing time that allows for handling in as little as 8 minutes. When necessary, the coating can be readily removed with the correct stripping agents, or it can be soldered through for repair or rework purposes.


The MG Chemicals 422B is designed to offer robust protection and reliability under various challenging conditions. It features the following notable properties:

  • High Service Temperature: This conformal coating product can withstand a maximum service temperature of 200°C, making it suitable for applications that demand high-temperature resilience.
  • Fast Cure: The 422B is a time-efficient solution that becomes tack-free in approximately 8 minutes and fully dries in 20 minutes at 65°C [149 °F].
  • UV-A Light Fluorescence: The 422B coating fluoresces under UV-A light, which helps in identifying coating coverage and thickness.
  • Excellent Corrosion Resistance: The coating offers superior protection against moisture, corrosion, fungus, dust, thermal shock, short circuits, high-voltage arcing, and static discharge.
  • UL94 V-0 Certification: For added assurance of safety and quality, the 422B coating is certified UL94 V-0 (File# E203094), illustrating its compliance with stringent flammability standards.
  • Validated for Robotic Equipment: The MG Chemicals 422B has been validated for use with selective robotic coating equipment, ensuring precision and consistency in application.


The MG Chemicals 422B conformal coating is uniquely suited to a wide range of applications, particularly those requiring high service temperature and flexibility. It applies minimal stress on components during thermal cycling, thus making it an excellent choice for applications involving wide temperature ranges. These applications span across various industries and include:

  1. Electronics Manufacturing: The coating’s exceptional protection against moisture, corrosion, and high-voltage arcing makes it a favourite among manufacturers of electronic components and devices.
  2. Automotive Industry: Given its high durability and resilience to thermal shock, the MG Chemicals 422B is a reliable solution for coating automotive electronics.
  3. Aviation and Aerospace: The coating’s resistance to extreme temperatures and conditions make it a suitable choice for use in avionics and other aerospace applications.

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