How to Select Motor Potting Compound?EP 1716 High-Thermal-Conductivity Epoxy Potting Compound Delivers One-Stop Thermal Dissipation & Reliability for Motors

A palm-sized stator winding carries hundreds of amperes of electric current; a drive motor generates continuous heat at rotational speeds of tens of thousands of revolutions per minute. Potting compound serves as the final safeguard securing motor operational safety. If motors are the “hearts” of new-energy vehicles and industrial automation, motor potting compounds are the “pericardia” protecting these hearts. They must deliver efficient heat conduction and dissipation, reliable electrical insulation, and resistance to extreme temperature shocks ranging from -50°C to 180°C. Should the wrong compound be chosen for this triple-mission task, the consequence could be full-product recalls. Cutting straight to the point, today we introduce ELAPLUS EP 1716, a high-thermal-conductivity epoxy potting compound that excels specifically in motor stator potting applications. We back our claims with solid performance parameters. I. Why Is Motor Potting Becoming Increasingly Demanding? Latest data shows the global potting compound market reached approximately USD 3.9 billion in 2025, among which automotive thermal‑conductive potting compounds alone exceeded USD 1.2 billion, projected to surge to USD 2.5 billion by 2034. This growth is primarily driven by the booming new-energy vehicle, industrial servo motor and 5G electronic packaging sectors. Take new-energy vehicles as an example. The power density of mainstream drive motors has risen from the early 2-3 kW/kg to 5-7 kW/kg or higher today. Doubled power density means nearly doubled heat generation per unit volume of windings. Meanwhile, the rapid rollout of 800 V high-voltage platforms has raised requirements for motor insulation systems from “basic sufficiency” to “absolute reliability”. In traditional processes, motor stator windings are fixed and protected mainly by impregnating varnish. Yet such varnishes typically feature a thermal conductivity of only 0.2–0.3 W/m·K with insufficient filling capacity, leaving massive air gaps between coils and iron cores. Air, with a thermal conductivity of merely 0.026 W/m·K, acts as a natural thermal barrier….