Creality K2 Series Hotend Insulation Sleeve – 3-Pack Silicone Socks – Genuine OEM
The Creality K2 Series Hotend Insulation Sleeve is a genuine OEM replacement silicone sock designed to fit around the hotend heating block of compatible Creality K2 Series 3D printers.
Made from heat-resistant silicone, the sleeve helps insulate the hotend, maintain more stable operating temperatures, and protect the heating block from filament residue and debris. Creality officially identifies this replacement as the Hotend Insulation Sleeve, SKU 4004010291, supplied as a 3-piece set.
Product Function
The silicone insulation sleeve fits directly over the hotend heating area and provides a thermal barrier between the hotend and surrounding airflow.
It helps:
- Maintain more stable hotend temperatures
- Reduce heat loss from the heating block
- Protect the hotend from filament buildup
- Reduce the effect of cooling airflow on the heater block
- Keep the hotend assembly cleaner
- Improve temperature consistency during long and high-speed prints
- Protect surrounding components from direct radiant heat
Key Features
- Genuine Creality OEM replacement part
- Heat-resistant silicone construction
- Designed specifically for the Creality K2 Series hotend
- Helps maintain consistent nozzle temperatures
- Reduces heat loss from the heating block
- Protects the hotend from melted filament residue
- Flexible design for easy installation and removal
- Direct replacement for damaged or worn original silicone socks
- 3 insulation sleeves per package
- Ideal maintenance spare for frequent printer use
Specifications
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Brand: Creality
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Product Type: Hotend Insulation Sleeve / Silicone Sock
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Creality SKU: 4004010291
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Material: Heat-Resistant Silicone
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Dimensions: 16 × 18.53 × 27.95 mm
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Quantity: 3 Pieces
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Installation Location: Hotend Heating Block
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Function: Thermal Insulation & Hotend Protection
Compatibility
The OEM 4004010291 insulation sleeve is listed for:
- Creality K2
- Creality K2 Pro
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Creality K2 Plus
The K2 Pro hotend operates at temperatures up to 300°C, making proper hotend insulation important for maintaining consistent thermal performance.
When Should It Be Replaced?
Replace the silicone sleeve when it becomes torn, deformed, loose, heavily contaminated with melted filament, or damaged during hotend maintenance.
A damaged or missing sleeve may expose the heater block directly to cooling airflow and filament residue.
Package Includes
- 3 × Creality K2 Series Hotend Insulation Sleeves
Important Notes
This product is the silicone insulation sleeve only. The hotend, nozzle, heater, thermistor, and other toolhead components are not included.
Always allow the hotend to cool completely before removing or installing the silicone sleeve. Creality's hotend service instructions specifically call for removing the silicone sleeve during hotend disassembly.
