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Heat conductive Silicone rubber pads / gap filler from Thal overview picture different sizes and thickness
A blue circle is filled with evenly spaced horizontal black lines, creating a striped pattern reminiscent of LED modules. The lines make the blue color appear as alternating light and dark blue horizontal stripes within the circle against a white background.

F20 – Normal Gap Filler (Silicone)

Heat-conducting silicone rubber

F20 is an economical, high cohesion ceramic filled silicone elastomer typically supplied with a pet release liner on both sides.

Thal Article Number: F20

Performance Materials: Normal Gap Filler (Silicone)

F20 - Normal Gap Filler (Silicone)

The product is intrinsically tacky and has excellent compres-sion performance over a wide range of stack up tolerances with minimal force applied to component parts.

F20 can be supplied with a fabric or film on one side for addi-tional support during handling and assembly.

Ordering Example

Very nice to work with. This is exactly what we were looking for for our project!


F20 – Normal Gap Filler (Silicone) specifications

Properties Unit F20
Base material
Ceramic filled silicone elastomer
Tested thickness
Light orange
Thickness tolerance
Thermal conductivity through
Thermal Impedance (compression 30 % )
Thermal Impedance (compression 40 % )
Thermal Impedance (compression 50 % )
Operating Temp.
-55 to 200
Volume resistivity
1.1 x 1010
Dielectric strength
Shore 00
Flame rating
UL 94
Standard thicknesses
0.508 / 1.016 / 1.524 / 2.032 / 2.540 / 3.048 / 4.064 / 5.080
Performance Materials: Normal Gap Filler (Silicone)

Interested in F20 – Normal Gap Filler (Silicone)?

Thal Technologies, located in Almere, has been a pioneer in thermal management and LED lighting solutions for over two decades. Our commitment to innovation and excellence drives us to deliver top-tier thermally conductive and electrically insulating materials across a spectrum of electronics applications.

As industry leaders, we excel at tackling complex challenges in thermal management. Our comprehensive approach encompasses consultation, design, assembly, and manufacturing, ensuring that every solution is not only effective but also seamlessly integrated.

At Thal Technologies, we understand the critical importance of precision and reliability. Our tailored solutions are designed to enhance performance and efficiency, making us the partner of choice for businesses seeking cutting-edge thermal management and lighting solutions.

Request a quote or come visit us in Almere, the Netherlands. The coffee is already brewing! We look forward to discussing how we can assist with your needs.
Marko Widman Thal Technologies
Marko Widman
Office Sales T.I.M.
Frequently Asked Questions

F20 – Normal Gap Filler (Silicone) frequently asked questions

Welcome to the FAQ section for Thal Technologies’ Thermal Interface Materials. Here, you’ll find answers to the most commonly asked questions about our high-performance thermal solutions. Whether you’re seeking detailed information about our product offerings, customization capabilities, or technical support, this section is designed to provide you with the information you need. If your question isn’t addressed here, please feel free to contact us directly. Our team of experts is always ready to assist you in finding the best thermal management solutions for your specific applications.

We offer a wide range of thermal interface materials, including thermal tapes, gels, gap fillers, liquid gap fillers, adhesives, pastes, phase change materials, and graphite films. Each type is designed to enhance thermal conductivity and electrical insulation. Please refer to our specific product pages for more information or talk to one of our experts. Also, feel free to request a free sample or sample box. 

Yes, we specialize in customizing thermal interface materials to meet your unique specifications. Our team can tailor materials to any shape or form required and adjust formulations based on your specific needs.

Our thermal interface materials are used in various industries, including power electronics, IoT & sensing, aviation, automotive, energy, and LED lighting.

We adhere to strict quality control processes and comply with international standards such as ISO 9001. Our materials undergo rigorous testing to ensure they meet the highest performance and reliability standards.

Yes, we provide rapid prototyping services to quickly develop and test custom thermal interface materials, allowing for efficient iterations and adjustments based on your feedback.

Absolutely. We can combine, tweak, and customize materials to meet specific client requirements, ensuring the final product perfectly aligns with your application needs.

You can request a custom solution by contacting us via email at or by phone at +31 (0)36 202 60 60. Our team will work closely with you to understand your needs and develop a tailored solution.

Our thermal interface materials provide enhanced thermal conductivity, electrical insulation, and reliability. They are designed to improve the performance and efficiency of your electronic systems.

Yes, we offer ongoing support to ensure your thermal interface materials continue to perform optimally. Our team is always available to provide technical assistance and address any issues that may arise. 


For further inquiries or to discuss your specific thermal interface material needs, please contact us at or +31 (0)36 202 60 60.