Thermally Conductive Gap Fillers

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Thermal Gap Fillers

Market Leading Liquid-Dispensed Thermal Gap Fillers

Our liquid-dispense, cured-in-place gap fillers provide low stress on components and improve thermal resistance when compared to thermal pads. As batteries for electric vehicles become smaller and higher-performing, they produce more heat which must be dissipated safely. Our gap fillers combine high thermal conductivity and low viscosity with the ability to maintain insulating properties.

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What are Thermal Gap Fillers?

Thermal gap fillers are a type of thermal interface material that is used to fill gaps between two surfaces to improve heat transfer. They are typically made of a soft, compliant material, such as silicone or urethane, that conforms to the surfaces it is placed between.

 

Thermal gap fillers are used in applications where there are uneven surfaces or gaps between two components, such as between a heat sink and a microprocessor or in EV batteries. By filling these gaps, thermal gap fillers can improve the thermal conductivity between the two surfaces, reducing the thermal resistance and improving the heat transfer.

Why use Parker Lord's Thermal Gap Fillers?

For years, we’ve been solving complex challenges by offering thermal management materials, adhesives, and coatings. We deliver solutions designed to meet your specific needs, continuous process improvements and cost targets all while ensuring the quality you expect. 

With global manufacturing capabilities, our team delivers consistency and quality around the globe. This commitment to customers is why our products are on nearly every car in the world. 

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Featured Video

CoolTherm UR-2000 Partnership with Durr & Kautex

In this video, learn more about Parker's CoolTherm UR-2000 Thermally Conductive Urethane Gap Filler and its benefits, including its thixotropic viscoity, flame retardance, room tempurate curing and reworkability. Also, learn about our collaboration with Dürr Systems and Kautex, ensuring perfect alignment of their technologies — a significant step forward in developing innovative solutions for electric mobility.

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CoolTherm UR-2000 Gap Filler Being Dispensed

Benefits of Thermally Conductive Gap Fillers

Our CoolTherm thermally conductive gap fillers offer several advantages for improving thermal management in EVs and electronic devices, including:

 

  • Two-Component & One-Component Options
  • Low Outgas Options
  • Room Temperature and Heat Curing
  • Electrically Isolative
  • 1:1 Mix Ratio
  • Protect Against Shock
  • Dampen Vibration

Watch our video of thermal gap fillers being dispensed through MMD equipment.

Liquid-Dispense Cure in Place Gap Fillers Up-Close

Thermally Conductive Gap Filler Applications Across Industries

Our CoolTherm gap fillers have applications in EVs, charging systems, power electronics, and infotainment devices across automotive, industrial, recreational, and off-highway industries. To find the right gap filler for your industry's unique application, reach out to our team.

Gap Fillers for Battery Packs

Applications: Cell to Cooling Plate, Cell to Module, Module to Pack

As battery technology evolves towards increased energy density, the ability to manage heat during charge and discharge cycles is crucial for optimizing performance. Our CoolTherm thermal gap fillers are customizable and compatible with cylindrical, pouch and prismatic battery cells. Our dedicated application engineers will work with you to ensure your project’s specific performance requirements, cost targets and deadlines are met quickly.

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Thermal Gap Fillers for Battery Packs

Gap Fillers for Charging Systems

Applications: Inverter, Converter, Charging Handles

CoolTherm gap filler materials improve proper heat flow in inductors and transformers, optimize performance during charging and discharging, and increase product longevity. Since these products have a low viscosity, they flow easily into the tiniest crevices, enabling better impregnation of irregularly-shaped magnetic components and helping to reduce inductor hum. We can help you select the correct material and optimize your process to improve performance and lower costs.

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Gap fillers for Charging Systems

Gap Fillers for Power Electronics

Protect components and improve stability - in order to extend the life of your power electronics, you need to maintain low thermal resistance and protect components from shock, moisture, and debris. CoolTherm gap fillers are robust thermal interface materials that protect delicate electrical components and provide excellent isolation and vibration dampening.

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Power Electronics Potted with Silicone

Gap Fillers for Infotainment Devices

Infotainment devices are the main source of information for EV drivers when it comes to entertainment, navigation, feedback from the vehicle, cabin comfort, and more. Since there are so many small electronics housed behind one screen, it's important these circuit boards stay cool, especially when packed into a tight space. 

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Infotainment Devices in Electric Vehicle

Focus on Quality

Expect the Same Level Quality Around the Globe

We provide products and services that consistently meet customer expectations of quality and value. A central element of our culture is an unwavering commitment to quality and continuous improvement. Our thermal management team is certified and registered to ISO 9001 and IATF 16949 which guides our focus on producing the highest quality products.

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Thermal Gap Fillers

Featured blog

Reducing Thermal Independence with Parker Lord Gap Fillers

Battery manufacturers are under pressure to increase battery density, which generates more heat in the battery pack. To transfer heat effectively from the battery pack’s hot substrate to a cooler one, a thermal interface material (TIM) is necessary, like Parker Lord's CoolTherm® gap filler.

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product catalogs, literature and more resources

Resources

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Reworkability of Gap Fillers in EV Battery Packs

The fast-growing EV market demands robust and efficient thermal management solutions for battery packs, such as gap fillers and thermal pads. Gap fillers outperform thermal pads to achieve lower thermal impedance, as the gap fillers conform to surface roughness before curing. This allows gap fillers to adhere well to surfaces and provide mechanical support during normal operation. However, this also poses a challenge during repair, removal and re-manufacturing. 

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Whitepaper: Liquid-Dispense Gap Fillers versus Thermal Pads

The purpose of this study was to compare the thermal impedance of CoolTherm® gap fillers versus commercially available thermal pads having equivalent bulk thermal conductivities. Data from this and future studies on battery packs will better enable designers to develop more efficient and cost-effective battery packs. 

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Product Catalog: Microelectronics

Explore our microelectronics solutions. If you need help choosing one of our standard microelectronic products or if they don’t quite meet your needs, let us help you determine an appropriate solution for your application.

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Blogs

Blogs

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Gap Fillers for Thermal Management: Part One

Increased density means more heat is being created in smaller volumes, making thermal management a vital issue for battery pack performance and design.

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What are Gap Fillers?

Battery performance is crucial to the continued advancement of electric vehicle (EV) design. One of the fundamental challenges in creating a battery pack is the effective management of heat generated during the battery’s charge and discharge cycles. Learn about how gap fillers aid in the removal of heat.

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How To Choose and Use Thermal Gap Fillers

Learn more about different gap filler chemistries, how gap fillers can be used in battery pack assembly and determining the right solution for you. 

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Not sure which gap filler you need? Talk with one of our experts.

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Gap Filler FAQs

Expand each section below for answers to frequently asked questions on gap fillers, how they compare to thermal pads and cure speed.