TPU 90A Flexible Filament 1.75 mm 1 kg — BambuLab Frozen

BambuLab TPU 90A Flexible Filament in Frozen color is a thermoplastic polyurethane filament with 90A Shore hardness, supplied on a 1 kg spool with 1.75 mm diameter. Designed for 3D printing applications that require a balance of elasticity, tear resistance and surface finish, this TPU filament is intended for use with standard 1.75 mm extruders. Its properties make it suitable for flexible functional parts such as gaskets, wearables, protective covers and impact-absorbing components where repeated bending and abrasion resistance are important.

Advantages

The material offers high elasticity combined with good abrasion and tear resistance, enabling durable flexible parts. Its 90A hardness provides a firm yet flexible feel suitable for functional prototypes and end-use parts. The Frozen color delivers a neutral, frosted appearance that is easy to post-process or paint. The filament’s dimensional consistency on a 1 kg spool supports predictable extrusion and layer adhesion when print settings are tuned for TPU.

Suitable for

• Flexible prototypes and end-use parts requiring rebound and wear resistance
• Seals and gaskets with moderate compression and flexing
• Wearable accessories and soft grips
• Phone cases, protective covers and shock-absorbing mounts

Key specifications

• Material type: Thermoplastic polyurethane (TPU)
• Hardness: 90A (Shore)
• Diameter: 1.75 mm
• Spool weight: 1 kg
• Color: Frozen (frosted/neutral finish)
• Compatibility: Designed for 1.75 mm extruder systems on FDM/FFF printers

How to use

Load the 1.75 mm TPU filament into a printer compatible with flexible materials and set the extruder temperature according to your printer and hotend recommendations for TPU (commonly between 210–230 °C, but verify with manufacturer curves). Use a direct drive extruder or a guided filament path to reduce buckling and ensure smooth feeding. Print at moderate speeds and increase retraction settings conservatively or disable retraction if stringing increases. Adjust bed surface and adhesion method (PEI sheet, glue stick, or PVA-based adhesives) to ensure the first layer bonds without excessive squish. Allow parts to cool gradually to maintain dimensional stability.

Usage recommendations

For best results with TPU 90A, use a direct-drive or well-constrained Bowden setup, slow printing speeds (e.g., 15–30 mm/s), and tuned flow settings to balance surface finish and flexibility. Test small calibration prints to optimize temperature and retraction. Store filament in a dry environment or sealed with desiccant to prevent moisture uptake that can degrade print quality.