Ice9 TPU Thermally Conductive and Electrically Non-Conducting Filament 1kg


Ice9 Flex is a TPE-based thermally conductive filament that is semi-flexible. The filament is not electrically conductive and has a thermal conductivity of 6 W/m-K in the print direction. This material is ideal for heat sinks, liquid cooling, and the most demanding thermal applications. Ice9 Flex works best with FDM printers that print flexible filaments.

Ice9 TPU Datasheet Download

Printing Guide Download


A new and improved version of TCPoly TPU with thermal conductivity of 6 W/m-K. Thermally conductive and electrically non-conducting FDM printing filament. Use this material when the highest thermal conductivity is required. The material has an electrical resistivity > 10^8 ohm-cm and does not carry electrical current. The material is tough and can form rigid structures when high infill percentages are used.

Estimated lead time for orders is currently 3-5 business days.

TCPoly products are proudly made in the USA.

Ice9 TPU Datasheet Download

Safety Datasheet Download

Additional information

Thermal Conductivity (W/m-K)


Extruder Temperature (°C)


Bed Temperature (°C)



Dark Gray

Filament Diameters (mm)

1.75, 2.85

Spool Filament Weights (g)

1,000, 500

We Reccomend

These are products that we find useful.

Flexion Extruder Flexion Extruder

A high performance filament extruder for today’s filaments, especially for flexible filaments that may require added control.

Gizmo Dorks Painters Tape

Gizmo Dorks Wide Painters Tape

Painters tape for 3D printing that is 6.25″ x 100′.

3D Printer Extruder Nozzle Kit

24 Piece Extruder Nozzle Kit

Thermally conductive filament performs best with larger filament diameters. This kit has 6 sizes from 0.2mm to 1.0mm.

Thermally Conductive Epoxy

Should your thermal application require an adhesive epoxy, we have found that MG Chemicals epoxy works well in our lab.

Downloadable Slicing Profiles

Configuration files for Ice9 Flex (right click to save file as).




Return Policy

Unopened filament can be returned for a full refund for 30 days.

Opened filament can be returned for a refund less a 15% restocking fee.

See full details here:

Go to Top