NinjaFlex TPU 3D Printing Filament – 1.75mm .50kg – LAVA

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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  • DF

    Experiment with this filament – small changes can make big differences Better than I expected, but still has its drawbacks.First, I am using this on a Monoprice Mini Select V2 3D printer. It’s a Bowden style extruder, so I had to print a spacer to fit ahead of the PTFE tube so the filament will extrude without looping onto itself. It really is the consistency of something like al dente cooked spaghetti.Initially I was able to print at 210C with a 40C heated bed. The next time I tried, it didn’t want to extrude at that temperature so I upped…

  • Amazon Customer

    Unravel enough length from the spool and omit the filament feed tube — prints very well! This is fun stuff! Use 100% infill for gaskets and watch straps, but drop the infill to 10% for a spongy pillow-like effect on large cavities. Seems durable.The biggest problem was getting it to feed reliably. The trick is to use a direct extruder (e.g. FlashForge Creator Pro) and NOT to use the spool or the plastic filament feed tube. This filament is gummy-ish and does NOT pull off the spool easily nor feed through the tube down into the extruder very well. I was always getting…

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