What the E3D V6 Pro silicone sock does

The E3D Silicone Sock for V6 Pro Heater Block 23mm is a 3-pack of high-temperature, non-stick silicone covers designed to keep the heater block cleaner and better insulated during printing. The Pro Sock uses a small nozzle hole design and is the newer standard E3D sock style.

These blue silicone socks are made to cling tightly to the heater block and help reduce molten plastic build-up around the nozzle area. The result is a cleaner HotEnd and more consistent thermal performance while printing.

Pro Sock = Small Nozzle hole

Please note that this is the standard E3D silicone sock that ships with all E3D V6 and Lite6 HotEnds as of May 2017. If a classic-style sock is preferred, that version remains available separately as the V6 Pro Silicone Sock style referenced by E3D.

Key features of the E3D silicone sock

• Heat-resistant, non-stick silicone: The silicone material repels build-up of molten plastic and helps keep the heater block cleaner during regular use.
• Helpful for sticky and filled filaments: The sock is especially useful with co-polyesters and filled materials that tend to build up on nozzles.
• Improved temperature stability: Extra insulation helps the HotEnd maintain stable temperatures, particularly when strong cooling airflow is used around the nozzle.
• Supports cleaner overhang and bridging performance: Reduced heat radiation from the block and nozzle to the print can help improve overhangs and bridges while maintaining stable HotEnd temperature.
• Tight, durable fit: The updated design clings tightly to the heater block and is described as longer-lasting than before.
• No disassembly required: The cover pushes onto the front of the HotEnd for installation.

How the V6 Pro sock installs and fits

The silicone cover installs by pushing onto the front of the HotEnd. No disassembly is needed.

The sock will be a tight fit when first installed cold. Once heated, the silicone expands to the correct size and fits the HotEnd snugly.

Where this heater block sock is most useful

This E3D accessory is well-suited to users who print with materials that leave residue around the nozzle, including sticky co-polyesters and filled filaments. It is also useful for print setups that rely on high airflow part cooling and need more stable nozzle-area temperatures.

For makers focused on cleaner printing, fewer plastic deposits on the heater block, and better consistency during bridging and overhang-heavy parts, the V6 Pro silicone sock is a practical HotEnd maintenance and performance accessory.