SUNLU TPU Flexible Filament – 1kg
Durable, Elastic, and Easy-to-Print Flexible Filament
SUNLU TPU Flexible Filament is a high-quality thermoplastic polyurethane designed to deliver excellent flexibility, durability, and print reliability. With a Shore hardness of approximately 90A, this filament strikes the perfect balance between elasticity and strength, making it ideal for parts that require flexibility, impact resistance, and long-term durability without compromising print quality.
Exceptional Flexibility and Strength
This TPU filament offers outstanding stretch and rebound characteristics, allowing prints to bend, compress, and recover without cracking or deforming. Its resilience makes it well-suited for flexible hinges, gaskets, grips, wearable components, vibration dampers, and impact-absorbing parts.
Reliable Printing Performance
SUNLU TPU features smooth, stable extrusion with strong interlayer adhesion and minimal stringing when printed under the right conditions. It feeds reliably through geared or direct extruders configured for flexible materials, allowing consistent results across a range of geometries.
Comfortable and Practical for Everyday Use
Unlike rigid filaments, TPU prints maintain elasticity while still providing good tear resistance. Its forgiving nature helps reduce failures due to over-retraction or under-extrusion when appropriate printing practices are employed.
Technical Specifications
Material: TPU (Thermoplastic Polyurethane)
Diameter: 1.75 mm ± 0.02 mm
Weight: 1 kg spool
Shore Hardness: ~90A (flexible yet strong)
Nozzle Temperature: 210°C – 230°C
Bed Temperature: 30°C – 60°C (optional)
Print Speed: 15 – 40 mm/s (slower speeds recommended for flexible filament)
Finish: Smooth, slightly elastic surface
Recommended Settings & Tips
Use a direct-drive extruder or a geared feeder for best results when printing flexible filaments. Reduce retraction settings and slow print speed slightly to help prevent filament buckling or feeding issues. A heated bed improves adhesion, but TPU can print on unheated beds with suitable surface preparation.
Ideal Applications
Flexible hinges, clips and wearable accessories
Protective bumpers, vibration pads, and shock absorbers
Soft grips, ergonomic handles, and elastic tools
Custom gaskets, seals, and flexible joints
Flexible, Tough, and Versatile
SUNLU TPU Flexible Filament combines the elasticity of rubber with the reliability of thermoplastics, making it a versatile choice for creative makers, hobbyists, and professionals who need functional, flexible prints that withstand everyday stress.
