M6 Ø7 mm PTFE-lined heatbreak for dual hotend

This stainless-steel heatbreak is designed for dual hotends using a 7 mm smooth mounting section and an M6 threaded connection to the heater block. Its 4.1 mm internal bore allows a 4 mm PTFE tube to reach the nozzle and is intended for 1.75 mm filament.

The PTFE tube guides the filament along the complete internal path, reducing friction and making PLA and flexible materials easier to feed. The operating temperature must remain within the safe limit of the installed PTFE tube.

Main features

• PTFE-lined version with the tube reaching the nozzle.
• Suitable for 1.75 mm filament.
• Stainless-steel construction.
• M6 thread for the heater block.
• 7 mm smooth section for installation in the heatsink.
• Nominal inner diameter: 4.1 mm.
• Designed for PTFE tubing with a 4 mm outer diameter.

Compatibility

Designed for the dual V6 Chimera-style hotend for 1.75 mm filament and other assemblies requiring an M6 thread, a 7 mm smooth mounting section and a pass-through PTFE tube.

The V6 designation alone does not guarantee compatibility. Before replacing an existing heatbreak, check the mounting diameter, thread, required length and PTFE tube position.

Difference from an all-metal heatbreak

This version prioritises a filament path guided by PTFE down to the nozzle. For a configuration without PTFE in the hot zone, see the all-metal M6 heatbreak with a 7 mm smooth section for dual hotends.

Installation recommendations

• Cut the PTFE tube squarely so that it seats correctly against the nozzle.
• Avoid leaving a gap between the tube and nozzle, as molten material may accumulate in this area.
• Perform the final nozzle tightening while hot, following the correct procedure for the hotend.
• Do not exceed the recommended operating temperature of the installed PTFE tube.