Dynalabs Simpliflex TPU Filament 1.75mm 1kg

Dynalabs Simpliflex TPU Filament 1.75mm — Rubber-Like Flexibility for Functional Prints

The Dynalabs Simpliflex brings true rubber-like elasticity to your desktop 3D printer. With a Shore hardness of 95A — similar to a car tire or a shoe sole — Simpliflex TPU produces parts that bend, stretch, compress, and bounce back to their original shape without cracking or deforming permanently. At $17.49–$17.99 per kilogram in 7 colors, it's the most affordable path to printing flexible functional parts.

Available in: Black, White, Natural, Green, Celestial, Nova, and Orange. The "Simpliflex" name reflects Dynalabs' focus on making TPU easier to print than typical flexible filaments — the formulation is tuned to minimize the clogging and jamming issues that make TPU frustrating on many printers.

Key Specifications

Recommended Print Settings

TPU demands slow, controlled extrusion. Print at 25–35mm/s — rushing causes buckling and jams. Temperature at 225–235°C. Disable retraction completely if your printer has a Bowden tube setup (the flexible filament compresses instead of retracting). Direct drive extruders can use minimal retraction: 0.5–1.5mm at 20mm/s. Set flow rate to 100–105% and use a wider line width (0.45–0.5mm for a 0.4mm nozzle) for better layer adhesion.

Pro Tips

The secret to successful TPU printing is a constrained filament path — the filament must have nowhere to escape between the drive gear and the nozzle. Direct drive printers (Prusa MK4, Bambu Lab X1C) handle TPU much better than Bowden setups. If you're on a Bowden printer (Creality Ender 3), use the shortest tube possible and print at 20mm/s maximum. Simpliflex's 95A hardness is firm enough to feed reliably while still producing genuinely flexible parts.

Best Applications

Phone cases, protective bumpers, shoe insoles, gaskets and seals, vibration dampeners, flexible hinges, watch bands, drone landing pads, robot wheel treads, gripper fingers for robotic arms, custom orthotics, tool grips, and any part that needs to absorb shock or flex repeatedly without breaking.

For high-speed TPU printing, check the IIID MAX HS TPU in our TPU Flexible Filament collection. Explore all materials in our 3D Printing Filaments guide.