SUNLU TPU Silk B 3D-printer filament 1,75 mm 1 kg sort

SUNLU TPU Silk B is a thermoplastic polyurethane filament that combines flexibility with a striking silk finish. This black 1.75 mm filament is engineered for FDM 3D printers, offering a Shore hardness of 95A and excellent elongation at break of 500%, making it ideal for functional parts that need to withstand bending and compression.

Highlights

• Premium TPU with a glossy silk surface for high-quality prints
• 1.75 mm diameter with a tight tolerance of ±0.02 mm for consistent extrusion
• 1 kg spool, vacuum sealed with desiccant to keep moisture out
• Print temperature range: 200–230 °C
• Heated bed optional (50–80 °C) for better adhesion
• Bubble-free material for smooth, reliable printing

In daily use

This filament is perfect for creating flexible parts like gaskets, phone cases, straps, and wearables. The silk texture gives your prints a premium look, while the material's elasticity ensures durability and resistance to impacts. We recommend a print speed between 20 and 50 mm/s, and a direct drive extruder for best results. For optimal layer adhesion, keep the printing environment free of drafts and use a heated bed if possible.

Full specifications

• Material: Thermoplastic Polyurethane (TPU)
• Colour: Black
• Filament Diameter: 1.75 mm
• Diameter Tolerance: ±0.02 mm
• Net Filament Weight: 1 kg
• Printing Temperature Range: 200–230 °C
• Heated Bed Temperature Range: 50–80 °C (or off)
• Shore Hardness: 95A
• Tensile Strength: 30 MPa
• Elongation at Break: 500%
• Density: 1.25 g/cm³
• Recommended Print Speed: 20–50 mm/s
• Finish: Silk / Glossy
• Spool Material: Plastic
• Packaging: Vacuum Sealed with Desiccant
• Compatibility: FDM 3D Printers
• Bubble-Free: Yes

Final note

With its combination of elasticity and elegant appearance, SUNLU TPU Silk B is a versatile choice for makers who want to add flexible, high-quality parts to their projects. Ensure your printer is properly calibrated for flexible materials to get the best out of this filament.