Bambu Lab Silicone Sock for P1S, Pack of 3
Share on social media:
Leave a P1S running long enough without a fresh silicone sock and the signs show up gradually, a crust of scorched filament clinging to the heater block, heat bleeding out sideways instead of staying in the nozzle, and a hotend that runs slightly hotter than it should just to hold its set temperature. It is an easy part to forget until the printer starts telling you it needs attention.
This is the genuine Bambu Lab silicone sock, part number FAH001-S-3, sold in a pack of three and officially compatible with the P1P, P1S, X1C, and X1E. It is the same insulating sock these printers ship with, not an approximation of one.
Genuine Bambu Lab part, FAH001-S-3 | Pack of 3 | Rated to 300°C | Compatible with P1P, P1S, X1C & X1E | Insulates the heater block and resists filament build-up | Toolless fit
Who the Silicone Sock is built for
The owner doing routine hotend maintenance
A silicone sock hardens and discolours with normal use, and a worn one is easy to overlook until print quality starts drifting or residue builds up around the heater block. Having spares on hand turns a potential mid-project problem into a five-minute swap.
The small business or print farm with a mixed fleet
Because this sock is officially compatible with the P1P, P1S, X1C, and X1E, a workshop running any combination of these printers can standardise on one genuine consumable rather than tracking separate parts for each model. A shared pack of three spares covers whichever machine needs one first.
Schools and institutions maintaining certified consumables
Where a lab or classroom needs to document that replacement parts are genuine rather than approximate, this sock carries Bambu Lab's own part number, FAH001-S-3, making it straightforward to record and reorder as part of a standard maintenance schedule.
What sets the Silicone Sock apart
Genuine Bambu Lab fit, no guesswork
This sock is moulded to the exact profile of the P1 and X1 series heater block and carries Bambu Lab's own part number, FAH001-S-3. A loose or slightly oversized generic sock can shift during printing and expose part of the heater block, undoing the insulation it is meant to provide, this one seats correctly every time.
Keeps heat exactly where it belongs
Rated to 300°C, matching the full temperature range of the P1 and X1 series hotend, the silicone wraps the heater block to reduce heat loss to the surrounding air. A hotend that is not fighting heat loss holds its target temperature more consistently, which shows up directly in extrusion stability and first-layer adhesion.
Resists filament build-up around the heater block
Oozing filament that contacts bare metal hardens into a crust that is awkward to clean and can interfere with servicing. The silicone surface sheds that residue far more easily than exposed metal, keeping the heater block accessible and reducing the mess that builds up around it over time.
One part, four compatible printers
FAH001-S-3 fits the P1P, P1S, X1C, and X1E, so it is the correct genuine spare regardless of which of these you own, or a shared spare if your setup spans more than one. That shared compatibility is useful for anyone building a stock of consumables for a mixed fleet.
A five-minute job with no tools required
Fitting a new sock means removing the old one from the heater block and pressing the replacement into place, following Bambu Lab's official maintenance guide. No tools, no wiring, and no extended downtime, one of the simplest maintenance tasks on the whole printer.
Full specifications
| Spec | Value |
|---|---|
| Manufacturer | Bambu Lab, genuine OEM part |
| Part number | FAH001-S-3 |
| Compatible printers | Bambu Lab P1P, P1S, X1C, X1E |
| Pack quantity | 3 x Silicone Sock for Hotend |
| Material | High-temperature silicone |
| Operating temperature range | Minus 10°C to 300°C |
| Function | Insulates heater block, resists filament residue build-up |
| Installation | Toolless, presses over the heater block |
| Fitment | Factory-original, matches P1/X1 series heater block profile exactly |
How the Silicone Sock compares to other options
| Spec | Genuine Bambu Lab Sock, this product | Generic Aftermarket Sock | Genuine Bambu Lab Sock, A1 Series | Running Without a Sock |
|---|---|---|---|---|
| Fit | Exact, factory profile | Close, minor variance possible | Exact, factory profile | Not applicable |
| Temperature rating | Minus 10°C to 300°C | Varies by supplier | 300°C | Not applicable |
| Heat retention | Good, consistent insulation | Good if seated correctly | Good, consistent insulation | Poor, heat loss to surrounding air |
| Compatible printers | P1P, P1S, X1C, X1E | P1P, P1S, X1C, X1E | A1, A1 Mini | P1P, P1S, X1C, X1E |
| Ideal buyer | Owners wanting a certified, exact-fit consumable | Budget one-off replacement | A1-series owners | Not recommended long-term |
| Price tier | R199.99 for 3 | Lower tier, per-unit variance | R89.99 for 3 | No cost, but shortens hotend life |
Materials and software
Filaments this accessory supports
The silicone sock is not filament-specific, it protects the heater block regardless of what is loaded. It matters most with materials that ooze readily, such as PLA and PETG, where it keeps stray filament from bonding to bare metal, and it is equally useful with ABS, ASA, PC, and PA, where the insulation helps the hotend hold a steady temperature through long, high-temperature prints. The 300°C rating covers the full range the P1 and X1 series can print, including reinforced filaments like PLA-CF and PETG-CF.
Slicers and software
This is a passive thermal and physical accessory with no interaction with slicer software, Bambu Studio, OrcaSlicer, or any other slicing tool. It requires no settings changes, calibration, or nozzle information updates after installation.
What's in the box
- 3 x genuine Bambu Lab silicone socks, FAH001-S-3
- Rated -10°C to 300°C, high-temperature silicone
Ordering, shipping and support
This genuine Bambu Lab silicone sock pack ships nationwide across South Africa by courier from 3D Printing Store's Centurion and Boksburg locations. It is covered under 3D Printing Store's standard warranty for genuine Bambu Lab parts, handled locally through their South African support team rather than an overseas RMA process. Hotends, complete hotend assemblies, and other P1 and X1 series accessories are available from the same store.
Frequently asked questions
Is a genuine sock better than a generic replacement?
A genuine sock is moulded to the exact profile of the P1 and X1 series heater block, so it seats correctly and stays in place under heat. A poorly fitted generic sock can shift during printing and expose part of the heater block, reducing the insulation it is meant to provide.
Does this sock fit the X1C and X1E as well as the P1P and P1S?
Yes. Part number FAH001-S-3 is officially compatible with the P1P, P1S, X1C, and X1E, so it is a suitable spare regardless of which of these you own, or a shared spare across a mixed fleet.
How long does it take to install?
Fitting a new sock takes a few minutes. Pull the worn one off the heater block and press the new one into place, following Bambu Lab's official maintenance guide, no tools or wiring are involved.
How often does the silicone sock need replacing?
It depends on print volume, but a sock in regular use typically shows discolouration, hardening, or minor tearing before other hotend components need attention. A pack of three means you are not reordering every time one wears out.
Does it come with a South African plug and local warranty support?
This is a passive silicone accessory with no electrical component, so no plug is required. It is backed by 3D Printing Store's local warranty support for genuine Bambu Lab parts, handled through their Centurion and Boksburg branches rather than an international claims process.