Bambu Lab TPU 85A/90A Filament 1kg 1.75mm – Premium Flexible Filament with RFID
Bambu Lab TPU is a premium flexible filament available in 85A (softer) and 90A (firmer) shore
hardness options. Featuring RFID technology for automatic slicer configuration, this official Bambu Lab filament
delivers excellent elasticity and abrasion resistance for functional flexible parts.
Engineered for high-speed printing with Bambu Lab’s direct drive extruders, TPU 85A/90A maintains dimensional
stability while offering the bounce and flexibility needed for phone cases, seals, grips, and wearable
accessories.
Bambu Lab TPU Key Features
- Two Hardness Options – 85A (softer) or 90A (firmer)
- RFID Enabled – Auto-configures Bambu Lab slicers
- Excellent Elasticity – High elongation and recovery
- Abrasion Resistant – Durable for functional parts
- High-Speed Capable – Optimized for direct drive
- Direct Feed Only – Not AMS/AMS Lite compatible (too flexible)
Bambu Lab TPU Printing Parameters
| Parameter | Recommended Value | Notes |
|---|---|---|
| Nozzle Temperature | 220-240°C | Higher for faster flow |
| Bed Temperature | 30-35°C | Textured PEI recommended |
| Print Speed | 30-80mm/s | Direct drive printers |
| Retraction | Minimal (0.5-1mm) | Reduce stringing issues |
| Chamber Temperature | Room temp to 45°C | No enclosure required |
85A vs 90A Shore Hardness
| Property | TPU 85A | TPU 90A |
|---|---|---|
| Feel | Softer, more rubbery | Firmer, semi-rigid |
| Best For | Phone cases, grips, seals | Wheels, belts, hinges |
| Print Difficulty | Moderate | Easier |
Bambu Lab TPU Applications
- Phone Cases – Protective flexible covers
- Seals & Gaskets – Watertight flexible seals
- Grips & Handles – Ergonomic soft-touch parts
- Wheels & Rollers – Shock-absorbing components
- Hinges & Joints – Living hinges and flexible connectors
- Wearables – Watch bands, bracelets, straps
Bambu Lab TPU Specifications
| Brand | Bambu Lab |
| Material | TPU (Thermoplastic Polyurethane) |
| Shore Hardness | 85A or 90A (select variant) |
| Diameter | 1.75mm |
| Net Weight | 1kg per spool |
| RFID | Yes |
| AMS Compatible | No (too flexible for AMS) |
Bambu Lab TPU FAQ
Q: Which hardness should I choose?
A: Choose 85A for softer, more rubbery parts like phone cases and seals. Choose 90A for firmer parts like wheels
and structural flexible components.
Q: Can I use TPU with AMS or AMS Lite?
A: No, TPU is NOT compatible with any AMS system (AMS, AMS Lite, or AMS 2 Pro). The flexible material causes feeding issues. Feed filament directly into the printer extruder.
Q: Do I need a direct drive extruder?
A: Direct drive is strongly recommended. Bowden setups can work but require very slow speeds and may have
feeding issues.
Related Products
Looking for other flexible filaments? Explore our collections:
- TPU Filaments – All flexible options
- Bambu Lab Filaments – Full range
- Flexible Filaments – TPE and TPU
- Soft Filaments – Elastic materials












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