E-Insulating Ice9 TPU Filament


E-insulating Ice9 is a TPE-based thermally conductive filament that is semi-flexible. The filament is electrically insulating and has a thermal conductivity of 4 W/m-K in the print direction. Use this material when you need to remove heat but must maintain electrical isolation or RF transparency. E-insulating Ice9 works best with FDM printers that print flexible filaments.

Product Datasheet Download

Printing Guide Download


Electrically insulating and thermally conductive, this materials provides high heat transfer and electrical isolation. This filament is TPU based and has high toughness and is semi-flexible, enabling good thermal contact for interfacing with heat generating components. The printed parts have an electrical resistivity > 1014 ohm-cm and a breakdown voltage > 5 kV at 1 mm.

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

TCPoly products are proudly made in the USA.

Safety Datasheet Download

Additional information

Thermal Conductivity (W/m-K)


Extruder Temperature (°C)


Bed Temperature (°C)




Filament Diameters (mm)

1.75, 2.85

Spool Filament Weights (g)

1,000, 500


1.5 g/cm3

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Downloadable Slicing Profiles

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