NinjaFlex TPU 3D Printing Filament – 3mm .75kg – SUN

NinjaFlex flexible filament leads the industry thanks to its superior flexibility and longevity compared to non-polyurethane materials. Its consistency in diameter and ovality (roundness) outpaces other polyurethane materials.

Made from a specially formulated thermoplastic polyurethane (TPU) material, this patented technology boasts a low-tack, easy-to-feed texture. The result is uniquely flexible, strong prints ideal for direct-drive extruders.

Suggested Applications: Seals, gaskets, plugs, leveling feet, protective applications.


  • Shore Hardness = 85A
  • Truly flexible (no fill or layer manipulation required to achieve performance)
  • 660% elongation allows for repeated movement and impact without wear or cracking 
  • Polyurethane composition allows for excellent vibration reduction
  • Patented low friction exterior allows for smooth feeding
  • Abrasion resistance 20% better than ABS and 68% better than PLA
  • Consistent diameter and material properties providing reliable, high quality prints
  • Chemical resistant to many materials, including naphtha, ASTM Oils #1-3, petroleum and freon
  • Adheres to all standard build platforms without glue or tape
  • REACH and RoHS 2002/95/EC Directive compliant


  • Extruder Temperature:  225°C – 235°C
  • Platform Temperature: Room temperature – 40°C
    Glue and/ or blue painters tape is suggested if not using a heated bed.
  • Print Speed: 
    Top and bottom layers: 10-20 mm/ sec (600-1200 mm/ min)
    Infill speeds: 15-35 mm/ sec (900-2100 mm/ min)
    Layer 2+ use cooling fan if available.

Product Features

  • Truly flexible – no fill or layer manipulation required to achieve performance
  • 660% elongation allows for repeated movement & impact without wear or cracking
  • Excellent vibration reduction
  • Shore Hardness = 85A
  • Suggested Applications: Seals, gaskets, plugs, leveling feet, protective applications.

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  • Vicky Bilaniuk

    hard to get it going but perseverance pays off Print very slowly. Less than 20mm/s. Use a bit more retraction than normal (1.5mm or so) to eliminate stringing. Non-print moves can remain fast. It cannot handle any kind of unexpected pressure in the nozzle so make sure you’ve completely cleared any ABS and that your printer is fully balanced. Excessive pressure leads to buckling.It prints with a bit of a sheen to it and has a very mild odor. Also, it’ll rip the kapton tape right off your plate so if you can print on a…

  • T. G. from Ocala Fl

    Great super strong flexible filament with consistent diameter and quality NinjaFlex is the strongest and most versatile 3D printing filament I have used. It makes great phone cases. I use a Lulzbot TAZ printer with the optional Flexystruder to print it and it makes beautiful phone cases that can wrap around the edges of your phone for great protection. Since it’s very flexible it bends easily to let you put in the phone and returns to its original shape. The elasticity of the case seems like it would provide a lot of shock absorption as well. I carried the NinjaFlex…

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