3D printing TPU filament ROSA3D 85A 1.75 mm 0.5 kg red

ROSA3D TPU 85A 1.75 mm (0.5 kg) in red is a flexible thermoplastic polyurethane filament designed for 3D printing of elastic and wear-resistant parts. With a Shore hardness of 85A it combines rubber-like flexibility and good mechanical strength, making it suitable for items that require bending, compression and repeated deformation. The filament comes wound on a compact spool and is intended for printers that accept 1.75 mm thermoplastic filaments and support TPU extrusion.

Advantages

This TPU filament offers a balance of elasticity and toughness, enabling durable prints that stretch and return to shape without permanent deformation. Its consistent 1.75 mm diameter and controlled formulation reduce jamming and ensure stable extrusion when using appropriate printer settings. The red color provides strong visual contrast for functional or aesthetic parts, while the 0.5 kg spool size is convenient for prototyping and small production runs.

Suitable for

• Gaskets and seals that require flexibility and resilience
• Wearable accessories such as flexible bands or soft clips
• Flexible prototypes, hinges and snap-fit components
• Shock-absorbing mounts and vibration dampers
• Custom grips, pads and ergonomic coverings

Key specifications

• Material type: Thermoplastic polyurethane (TPU)
• Shore hardness: 85A
• Nominal diameter: 1.75 mm
• Spool weight: 0.5 kg
• Color: Red
• Filament form: Flexible filament suitable for FDM/FFF printers

How to use

Load the 1.75 mm ROSA3D TPU filament into a printer capable of flexible filament extrusion. Use a direct-drive extruder or a well-tuned Bowden setup with a short filament path to minimize buckling. Set a moderate extrusion temperature appropriate for TPU; adjust first-layer height and flow to ensure good bed adhesion without excessive squish. Print at slow to moderate speeds and enable retraction settings that are conservative to prevent stringing or clogging. Allow printed parts to cool gradually before post-processing.

Usage recommendations

For best results, print on a clean, level build surface with a suitable adhesive or textured bed to improve first-layer adhesion. Use printing speeds in the range recommended for flexible TPU (typically lower than rigid filaments) and calibrate retraction and extrusion multiplier to match your printer. Store the filament in a dry environment or sealed container with desiccant to preserve material properties.