Category: TPU

Material Information

Name: TPU 85A
Source: Plural Additive Manufacturing / Airwolf 3D

With superior flexibility at 85A shore hardness, as well as abrasion resistance and chemical resistance, TPU 85A printing filament can be used for a multitude of applications in education, medicine, sports and environmental efforts. Excellent layer adhesion and strength means you can print functional belts for drives and gears as well.

  • Technical Data Sheet (TDS)
  • Airwolf 3D Printing Guide
  • 3ntr Printing Guide
  • Related Info:
  • KISSlicer Installation - How to Guide
  • Apex Installation - How to Guide
  • Printer Compatibility:



    ASA & TPU 85A - Watertight Jar

    Purchase Options

    Company Available Colors Buy Now Black, Blue, Red, Natural Buy Now Fire, Grass, Midnight, Sapphire

    Recommended Support Materials

    Mechanical Properties

    Property Standard Value Unit
    Ultimate Tensile Strength ASTM D638 26 MPa
    Tensile Modulus ASTM D638 12 MPa
    Elongation at Break ASTM D638 660 %

    Hardness Shore

    Property Standard Value Unit
    Hardness ASTM D2240 85 Shore A

    Thermal Properties

    Property Standard Value Unit
    HDT @ 0.45 MPa ASTM D648 44 °C
    Glass Transition Temp DSC -35 °C

    Physical Properties

    Property Standard Value Unit
    Density ASTM D792 1.19 g/cm³

    Print Settings

    Subject 3ntr Airwolf
    Extruder Temperature
    • 230°C
    • 238°C
    Bed Temperature
    • N/A
    • 60°C
    Bed Preparation
    • Clean with isopropyl alcohol before and after printing.
    • WolfBite Original
    Cooling Fan
    • Yes
    • Yes
    Closed Chamber
    • Yes
    • Yes
    Heated Chamber
    • No
    • No
    Chamber Temperature
    • N/A
    • N/A
    • Requires an SPFU (Soft Polymer Feeder Unit)
    • N/A

    Material Management

    Subject 3ntr Airwolf


    • 50°C

    Dry Time

    • Heat Only  →    4 + hours
    • Heat + Vacuum →  2 hours


    • 50°C

    Dry Time

    • Heat Only  →    4 + hours
    • Heat + Vacuum →  2 hours
    Recommended Support Material
    • SSU00
    • SSU04
    • SSU09
    • SSU301
    • Hydrofill
    • Cool, dry place with desiccant.
    • Cool, dry place with desiccant.
    Compatible Materials
    • ABS
    • ASA
    • ABS
    • ASA

    Slicer Settings

    Parameter KISSlicer (0.4mm) KISSlicer (0.6mm) APEX
    Material Profile Name - - TPE
    Layer Height 0.24 mm 0.3mm 0.2
    Loops 2 2 1.2
    Skin 1 1 1.2
    Infill 20 % 16.7 % 31 %

    General Comments


    • Exceptional wear, tear and heat resistance
    • High impact strength
    • Easy formability, elastic and flexible
    • Good corrosion resistance to many common industrial oils and chemicals (see Chemical Resistance Table in Print Guide)
    • Shock absorption and vibration-dampening


    • Industrial Manufacturing
    • Functional Prototypes
    • Aerospace, engineering, healthcare
    • Seals, tubes, gaskets, grippers, end effectors
    • Shoes and insoles
    • Bushings, gaskets
    • End-use parts
    • Custom phone cases, rubber mats, and stress toys.
    • Sports - applications that need strength, flexibility and plenty of impact strength.
    • Healthcare - 3D-printed organs for pre-surgery prep and custom-designed prosthetics and orthotics to enhance patient care.
    • Can be used for tires or shock absorbers and is even occasionally utilized to make O-rings and seals. In the world of DIY, TPU is fantastic for flexible parts or casings as well as parts that need to have resistance to sudden impacts and movement.
    • In short, if you need to make a custom rubber piece quickly and relatively easily, TPU is your go-to material.


    • One downside to TPU is the printing speeds, which are rarely higher than 30 mm/s. This is because it’s difficult to push the proper amount of filament through the hot end, resulting in prints taking a lot longer to complete.
    • TPU doesn’t produce any notable levels of fumes while printing, but it’s not considered to be food safe. And though it’s a non-soluble material, it is hygroscopic, meaning that it will slowly absorb moisture from its surroundings, affecting print quality.

    Printing Skill & Experience - Expert

    • TPU has great elongation and stretchiness, but those properties can also cause some minor clogging and stringing.
    • Can be a challenge to print for beginners due to its unique, high-performance properties
    • Difficult to post-process because of its abrasion and chemical resistance.
    • Requires installation of an SPFU on the 3ntr 3D Printers.