Home » Activator Activator Written by Bryan Joslin on November 1, 2023 A component that initiates the chemical reaction in two-part paint systems. Related Articles: The Differences Between Acrylic Enamel and Urethane Auto PaintsTips and Tricks For Applying Eastwood Chassis Black PaintHow to Use Eastwood Candeez Urethane PaintUrethane Paint Safety And Application InstructionsPanel Bond Vs. Welding