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Item #:
118637138
FYSETC 3D Prusa Printer Accessory - MK4 MK4S Heater Block Silicone Sock: Hotend Part Insulate Protect Hot End Nozzle Print Head Cover Compatible with
86% of respondents would recommend this to a friend
Item #:
118637138
ZMW 537
Price Details
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Imported from USA store
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Order now and get it around Saturday, September 19
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Keep your hotend clean and protect it with our heat-resistant silicone sock for the MK4, ensuring smooth and successful 3D printing every time!
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What Stands Out
Enhanced Insulation
The silicone sock provides superior insulation, maintaining optimal hotend temperatures, which reduces heat creep and causes fewer printing issues.
Durable Material
Made from high-quality silicone, the sock withstands high temperatures and protects against damage, ensuring longevity and consistent performance during 3D printing.
Compatibility
Designed for I3 MK3.9 XL, this accessory fits seamlessly with MK4 and MK4S models, enhancing versatility and usability for a wide range of 3D printers.
Product Details
Who Should Buy?
-
3D Printing Enthusiasts
Perfect for dedicated users wanting optimal heat management and stable print quality while using Prusa printers.
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Frequent Users
Ideal for individuals who regularly use their 3D printers and require consistent performance without thermal fluctuations.
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DIY Modifiers
Great for users who frequently upgrade or modify their printers, needing additional insulation to maintain print temperature.
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Occasional Users
Not ideal for users who only print infrequently, as the benefits may not justify the investment.
Product Description
FYSETC 3D Prusa Printer Accessory - MK4 MK4S Heater Block Silicone Sock: Hotend Part Insulate Protect Hot End Nozzle Print Head Cover Compatible with i3 MK3.9 XL - Black, Pack of 4
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Customer Questions & Answers
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Question:
Is this silicone sock compatible with other Prusa models?
Answer: No, it is specifically designed for MK4, MK4S, and MK3.9 models only. -
Question:
How easy is it to install the silicone sock?
Answer: It's designed for drop-in replacement, making it very easy to install and remove. -
Question:
What temperature can the silicone sock withstand?
Answer: The silicone sock can withstand temperatures up to 280°C/536℉.
FYSETC 3D Printer Accessories Editorial Review
The FYSETC 3D Prusa Printer Accessory - MK4 Heater Block Silicone Sock has garnered a mix of positive and negative feedback from customers, detailing varied experiences in the realm of 3D printing. Many users have praised the accessory for its easy installation and snug fit on the Original Prusa MK4 nozzle and heat block. The silicone sock is noted for effectively retaining heat, which enhances the efficiency of filament changes and keeps the printing process cleaner by preventing residue buildup on the metal heat block. Users have found that the melted plastic adheres to the sock rather than the hotend, making cleanup much simpler. Several reviewers have highlighted the durability of the sock, claiming that it outperforms original variants, with some indicating they would prefer to stock up on the FYSETC versions due to their reliability. However, some customers voiced concerns about the quality of the silicone itself, mentioning issues with smoke and burning when installed on a Prusa factory hotend. This has led to some performance setbacks, such as the sock interfering with the nozzle, necessitating modifications to the product. Overall, the product seems to deliver solid performance for many users while presenting potential issues with quality that might affect others. New users are advised to adjust printer settings appropriately after installation to prevent printing mishaps and maintain Consistent results. **
Customer Reviews & Ratings
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Pros
- Easy installation and snug fit for Original Prusa MK4
- Effective in retaining heat, facilitating efficient filament changes
- Simplifies cleanup by allowing melted plastic to stick to the sock
- Generally durable and may outperform original socks
Cons
- Some reports of poor silicone quality, including smoking and burning
Platform Trust & Buyer Confidence
JG
Jazz
Verified buyer
“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
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Emmanuel
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“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”
31 August 2026 · via Trustpilot
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fnd
Verified buyer
“The delivery was fast and the product came undamaged and authentic.”
29 August 2026 · via Trustpilot
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25 August 2026 · via Trustpilot
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Hengo
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“Fast, convenient and cheap. Great store!”
27 August 2026 · via Trustpilot
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ZMW 537
Order now and get it around Saturday, September 19
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Features & Benefits
- Compatible with MK4, MK4S, and MK3.9 3D Printers.
- Designed to fit snugly and resist warping under heat.
- Easy installation and removal, providing convenience and efficiency.
- Protects the heater block from burnt plastic and filament build-up.
- Made of heat-resistant silicone with a temperature tolerance of up to 280°C/536℉.
- Ideal for printing exotic materials like PETG at higher temperatures.
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