NinjaFlex® TPU 85A in Steel Gray for High-Performance Flexible 3D Printing

NinjaTek NinjaFlex TPU 85A is one of the most recognized flexible 3D printing filaments in the maker and professional manufacturing community. Designed for applications that require exceptional elasticity, durability, and impact resistance, this premium TPU filament delivers reliable print performance while maintaining outstanding flexibility.

The Steel Gray color provides a clean, professional appearance suitable for functional prototypes, wearable products, protective components, vibration-dampening parts, and end-use applications.

Featuring a proprietary low-friction exterior, NinjaFlex feeds more smoothly than many flexible filaments, helping users achieve consistent extrusion and high-quality results. Its 85A Shore hardness and impressive elongation characteristics allow printed parts to flex, bend, compress, and recover repeatedly without cracking or breaking.

Key Features & Benefits

• Premium TPU filament with Shore 85A flexibility
• Steel Gray color for professional-looking finished parts
• 1.75mm diameter for broad printer compatibility
• 0.5kg spool ideal for prototypes and production runs
• Proprietary low-friction exterior for smoother feeding
• Up to 660% elongation for extreme flexibility
• Excellent impact resistance and durability
• Superior vibration and shock absorption properties
• Strong resistance to abrasion and wear
• Chemical-resistant polyurethane formulation
• Consistent diameter for reliable extrusion
• Suitable for functional prototypes and end-use parts

Exceptional Flexibility Without Compromise

Unlike rigid materials such as PLA and PETG, NinjaFlex TPU is engineered to produce parts that remain highly flexible while maintaining excellent strength and durability. The material can withstand repeated bending, stretching, compression, and impact without significant degradation.

Its polyurethane composition naturally absorbs vibrations and shocks, making it a popular choice for protective equipment, gaskets, seals, dampeners, grips, footwear components, and wearable products.

Print Quality and Surface Finish

NinjaFlex TPU produces smooth, professional-looking prints with excellent layer bonding and durable mechanical performance. The Steel Gray finish offers a clean industrial appearance that works well for engineering prototypes, robotics projects, consumer products, and functional parts.

When printed using recommended settings, users can achieve:

• Strong interlayer adhesion
• Smooth surface finish
• Excellent flexibility
• Reduced brittleness
• Durable end-use performance
• Reliable dimensional consistency

Typical Applications

NinjaFlex TPU 85A is commonly used for:

• Protective cases and covers
• Wearable devices
• Robotics components
• Vibration dampeners
• Gaskets and seals
• Footwear prototypes
• Sporting equipment components
• Flexible hinges
• Medical and prosthetic prototyping
• Industrial fixtures
• Shock-absorbing parts
• Functional end-use products

Material Compatibility Information

NinjaFlex TPU 85A is designed for FDM and FFF 3D printers that support flexible materials.

Compatible with many popular platforms including:

• Direct-drive 3D printers
• Flexible-filament-capable Bowden systems
• Open-material desktop printers
• Professional prototyping systems
• Engineering-grade FDM machines

For best results, slower print speeds are recommended due to the material's high flexibility. Direct-drive extruders typically provide the easiest printing experience with ultra-flexible materials such as 85A TPU.

Recommended printing guidelines include:

• Nozzle temperature: 225°C–250°C
• Bed temperature: Room temperature to 50°C
• Bed adhesive recommended when necessary
• Reduced print speeds for optimal extrusion control
• Cooling fan may be used after initial layers

Why Users Choose NinjaFlex TPU

NinjaFlex remains a preferred choice among makers, engineers, educators, print farms, and product designers because of its unique balance of flexibility, durability, and print reliability.

Users choose NinjaFlex when standard TPU materials are not flexible enough and when applications demand long-term durability, abrasion resistance, impact absorption, and repeated movement performance.

Its proven track record, consistent manufacturing quality, and easy-feeding low-friction exterior help make it one of the industry's most trusted flexible filament solutions.

Bring Flexible Designs to Life

Whether you're creating functional prototypes, wearable products, vibration-dampening components, or durable end-use parts, NinjaTek NinjaFlex TPU 85A Steel Gray delivers the flexibility, resilience, and print quality needed for demanding applications. Add a professional-grade flexible filament to your workflow and unlock new possibilities for functional 3D printing.