Top 10 Companies in the Thermally Conductive Gap Filler (Elastomeric) for Power Electronics Market (2026): Market Leaders Powering Global Power Electronics

MARKET INSIGHTS

Global Thermally Conductive Gap Filler (Elastomeric) for Power Electronics market size was valued at USD 1.43 billion in 2025. The market is projected to grow from USD 1.55 billion in 2026 to USD 3.12 billion by 2034, exhibiting a CAGR of 8.1% during the forecast period.

Thermally conductive gap fillers (elastomeric) are soft, conformable thermal interface materials engineered to efficiently transfer heat between heat-generating electronic components and heat sinks or housings. These materials are typically silicone-based elastomers filled with thermally conductive particles such as aluminum oxide, boron nitride, or zinc oxide, offering a combination of high thermal conductivity, electrical insulation, mechanical compliance, and vibration damping. Their inherent softness allows them to fill air gaps and surface irregularities without exerting damaging mechanical stress on delicate power electronic components, making them indispensable in applications involving IGBTs, MOSFETs, power modules, and EV inverters.

Thermally Conductive Gap Filler (Elastomeric) for Power Electronics Market – View in Detailed Research Report

Top 10 Companies

1. Henkel AG & Co. KGaA

Headquarters: Düsseldorf, Germany
Key Offering: Bergquist thermal interface materials, silicone-based elastomeric gap fillers

Henkel AG & Co. KGaA is a global specialty chemicals leader with a strong focus on thermal management solutions. Their Bergquist line delivers high thermal conductivity, electrical insulation, and excellent mechanical compliance, making it ideal for power electronics applications in EV inverters, battery management systems, and industrial drives. Henkel invests heavily in R&D to develop next-generation formulations that address the evolving thermal challenges posed by wide-bandgap semiconductors such as SiC and GaN.

Sustainability & Growth Initiatives:

• Development of low-VOC, RoHS-compliant formulations.
• Expansion of regional manufacturing in North America and Asia-Pacific to reduce lead times.
• Investment in high-performance filler technologies, including boron nitride alignment.

2. Parker Hannifin Corporation (Chomerics Division)

Headquarters: Cleveland, United States
Key Offering: Chomerics elastomeric gap fillers, phase-change materials

Parker Hannifin’s Chomerics division provides a portfolio of silicone and polyurethane-based gap fillers that deliver superior thermal conductivity and mechanical compliance. Their products are widely used in automotive power modules, industrial motor drives, and data center power supplies. Parker focuses on innovation through advanced filler chemistry and process optimization to meet stringent automotive and industrial qualification standards.

Sustainability & Growth Initiatives:

• Commitment to reducing carbon footprint across manufacturing.
• Development of recyclable and biodegradable elastomeric formulations.
• Strategic partnerships with Tier‑1 OEMs to accelerate design-in.

3. Dow Inc.

Headquarters: Midland, United States
Key Offering: silicone-based elastomeric gap fillers, high thermal conductivity grades

Dow’s portfolio of thermally conductive elastomers offers high conductivity, electrical insulation, and excellent vibration damping. Dow invests in advanced filler technologies such as high-purity boron nitride and aluminum oxide to achieve conductivities above 6 W/m·K while maintaining softness. Their products are used in automotive inverters, industrial power modules, and renewable energy converters.

Sustainability & Growth Initiatives:

• Investment in green chemistry to reduce VOC emissions.
• Expansion of supply chain resilience for specialty fillers.
• Development of high-performance, low-density formulations.

4. 3M Company

Headquarters: Maplewood, United States
Key Offering: 3M thermal interface materials, silicone and phase-change gap fillers

3M’s thermal interface solutions combine high thermal conductivity with electrical insulation and mechanical compliance. 3M’s products are used in automotive power electronics, industrial drives, and data center power supplies. The company emphasizes robust R&D and global distribution to support Tier‑1 OEMs and high-volume manufacturers.

Sustainability & Growth Initiatives:

• Targeted reduction of greenhouse gas emissions in manufacturing.
• Investment in sustainable packaging and recyclable materials.
• Collaboration with customers on lifecycle assessment.

5. Fujipoly

Headquarters: Tokyo, Japan
Key Offering: silicone elastomeric gap fillers, high thermal conductivity formulations

Fujipoly specializes in silicone-based elastomers with high thermal conductivity and electrical insulation. Their products are widely used in EV power modules, solar inverters, and industrial motor drives. Fujipoly focuses on innovation through advanced filler engineering and process optimization to meet the demands of high power densities.

Sustainability & Growth Initiatives:

• Development of low-VOC, RoHS-compliant formulations.
• Expansion of production capacity in Asia-Pacific.
• Investment in renewable energy for manufacturing.

6. Shin‑Etsu Chemical Co., Ltd.

Headquarters: Osaka, Japan
Key Offering: silicone and polyurethane gap fillers, hybrid filler systems

Shin‑Etsu provides a range of elastomeric gap fillers with high thermal conductivity and excellent mechanical compliance. Their products are used in automotive power electronics, industrial drives, and renewable energy converters. Shin‑Etsu emphasizes advanced filler technologies and rigorous quality control to meet automotive and industrial standards.

Sustainability & Growth Initiatives:

• Commitment to reduce hazardous substances in formulations.
• Investment in energy-efficient manufacturing processes.
• Development of high-performance hybrid filler systems.

7. Momentive Performance Materials Inc.

Headquarters: Baltimore, United States
Key Offering: silicone elastomeric gap fillers, high thermal conductivity grades

Momentive offers silicone-based elastomeric gap fillers that deliver high thermal conductivity, electrical insulation, and mechanical compliance. Their products are used in automotive power modules, industrial drives, and data center power supplies. Momentive focuses on R&D to develop advanced filler chemistries and optimize processing for high-volume manufacturing.

Sustainability & Growth Initiatives:

• Reduction of VOC emissions in production.
• Expansion of supply chain resilience.
• Development of recyclable elastomeric formulations.

8. Boyd Corporation

Headquarters: St. Paul, United States
Key Offering: silicone and polyurethane gap fillers, high-performance hybrid fillers

Boyd provides a portfolio of elastomeric gap fillers that deliver high thermal conductivity, electrical insulation, and mechanical compliance. Boyd’s products are used in automotive power electronics, industrial drives, and renewable energy converters. Boyd emphasizes process optimization and quality control to support Tier‑1 OEMs and high-volume manufacturers.

Sustainability & Growth Initiatives:

• Investment in green chemistry to reduce VOCs.
• Development of low-density formulations.
• Expansion of regional manufacturing in North America.

9. Shenzhen Jones Tech PLC

Headquarters: Shenzhen, China
Key Offering: cost-competitive silicone elastomeric gap fillers, high thermal conductivity grades

Shenzhen Jones Tech supplies silicone-based elastomeric gap fillers with high thermal conductivity and electrical insulation. Their products are used in automotive power electronics, industrial drives, and data center power supplies. The company focuses on cost-competitive solutions and rapid production scaling to meet global demand.

Sustainability & Growth Initiatives:

• Investment in renewable energy for manufacturing.
• Development of high-performance filler systems.
• Expansion of regional distribution networks.

10. Suzhou Tianmai Thermal Technology Co., Ltd.

Headquarters: Suzhou, China
Key Offering: silicone elastomeric gap fillers, high thermal conductivity formulations

Suzhou Tianmai offers silicone-based elastomeric gap fillers with high thermal conductivity and electrical insulation. Their products are used in automotive power electronics, industrial drives, and renewable energy converters. The company focuses on advanced filler technologies and process optimization to meet global demand.

Sustainability & Growth Initiatives:

• Development of low-VOC, RoHS-compliant formulations.
• Expansion of production capacity in China and Asia-Pacific.
• Investment in green manufacturing practices.

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Market Outlook

The forecast indicates that the Thermally Conductive Gap Filler (Elastomeric) for Power Electronics market will continue to grow at a strong CAGR of 8.1% from 2026 to 2034, driven by the rapid electrification of automotive platforms, the exponential growth of data center infrastructure, and the widespread adoption of wide-bandgap semiconductors such as SiC and GaN. Premium-grade, high thermal conductivity formulations will command higher price points and long-term supply agreements as SiC and GaN power modules become mainstream.

Future Trends

• Next-generation elastomeric formulations with thermal conductivity above 6 W/m·K, achieved through boron nitride platelet alignment and hybrid filler systems.
• Increased integration of elastomeric gap fillers in AI accelerator hardware and hyperscale data center power supplies.
• Growing focus on sustainability, including low-VOC, RoHS-compliant, and recyclable elastomeric materials.
• Expansion of regional manufacturing to support local supply chains and reduce lead times.
• Advancements in automated dispensing and precision curing to improve yield and reduce manufacturing cost.