IdeaFormer silicone sock for the Elegoo Neptune 4 heater block
Silicone cover for the hotend heater block: it insulates the block and protects it from filament build-up. Versions for Neptune 4 / 4 Pro and for Neptune 4 Plus / 4 Max.
How to choose the variant
Choose the listing for your model, then the quantity: 1, 2 or 5 pieces for Neptune 4 / 4 Pro; 1, 3 or 5 pieces for Neptune 4 Plus / 4 Max.
Neptune 4 / Neptune 4 Pro
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Delivery country
Availability and shipping depend on the delivery country: check them on AliExpress.
Neptune 4 Plus / Neptune 4 Max
Affiliate link: we may earn a commission. Your price does not change.
Delivery country
Availability and shipping depend on the delivery country: check them on AliExpress.
Compatibility by printer
| Printer | Variant | Status |
|---|---|---|
| Elegoo Neptune 4 Neptune 4 | Neptune 4 / Neptune 4 Pro | Compatibility declared by the seller Assessed from documentation Verified on October 20, 2026 Model listed by the seller for this version. No hands-on test. |
| Elegoo Neptune 4 Max Neptune 4 Max | Neptune 4 Plus / Neptune 4 Max | Compatibility declared by the seller Assessed from documentation Verified on October 20, 2026 Model listed by the seller for this version. No hands-on test. |
| Elegoo Neptune 4 Plus Neptune 4 Plus | Neptune 4 Plus / Neptune 4 Max | Compatibility declared by the seller Assessed from documentation Verified on October 20, 2026 Model listed by the seller for this version. No hands-on test. |
| Elegoo Neptune 4 Pro Neptune 4 Pro | Neptune 4 / Neptune 4 Pro | Compatibility declared by the seller Assessed from documentation Verified on October 20, 2026 Model listed by the seller for this version. No hands-on test. |
What you need to install it
Why it was selected
Sold by the official IdeaFormer store on AliExpress, which names the compatible models in the title of each listing. It is a cheap consumable to replace when it tears or gets crusted with filament.
Limitations
- This is not an original part from the printer manufacturer.
- Compatibility declared by the seller: no hands-on test.
- The versions for Neptune 4 / 4 Pro and for Neptune 4 Plus / 4 Max are not interchangeable.
Available variants
- Neptune 4 / Neptune 4 Pro
- Neptune 4 Plus / Neptune 4 Max
Sources
- Silicone Socks For Elegoo Neptune 4/Pro Heated Block Sleeve Hotend Protector Cover For 3D Printer Parts Heater Blocks — IdeaFormer Official Store (AliExpress), accessed on October 20, 2026
- 1/3/5pcs Silicone Socks for Elegoo Neptune 4 Plus/4 Max Heater Block Cover Hotend Heat Insulation Black Case 3D Printer — IdeaFormer Official Store (AliExpress), accessed on October 20, 2026