Flexible TPU Filament for Clean, Functional Prints

Spectrum S-Flex 90A Filament in Polar White is a high-performance TPU material designed for users who need flexibility, durability, and consistent print results. With a Shore hardness of 90A, it offers an optimal balance between elasticity and structural strength—making it ideal for both prototyping and real-world applications.

The clean Polar White color provides a neutral, professional finish that works well for both functional components and aesthetic designs.

Key Features & Benefits

• 90A Shore Hardness for Balanced Flexibility
  Flexible enough for dynamic parts while maintaining shape and stability
• User-Friendly TPU Printability
  Easier to print than softer TPU materials with improved feeding reliability
• High Durability & Impact Resistance
  Built for repeated flexing and demanding applications
• Strong Layer Adhesion
  Produces consistent, reliable parts with excellent interlayer bonding
• Clean Polar White Finish
  Ideal for professional-looking parts, prototyping, or post-processing
• Abrasion & Chemical Resistance
  Suitable for long-term use in challenging environments

Typical Applications

Spectrum S-Flex 90A is ideal for a wide range of flexible and semi-flexible parts:

• Protective cases and covers
• Flexible hinges and connectors
• Gaskets, seals, and dampeners
• Ergonomic grips and handles
• Wearables and soft-touch components
• Automotive and RC parts
• Vibration-dampening mounts

Material & Compatibility

• Material Type: TPU (Thermoplastic Polyurethane)
• Diameter: 1.75mm
• Spool Weight: 0.5kg

Compatible with most FDM/FFF 3D printers that support flexible materials:

• Direct drive extruders recommended for best performance
• Bowden extruders can be used with slower speeds and tuning
• Heated bed improves adhesion and print consistency
• Works well on PEI sheets, textured plates, or glass with adhesive

Printability & Performance

• Ease of Printing: Moderate and accessible for TPU users
• Surface Finish: Smooth with a slightly satin flexible texture
• Flexibility: High with excellent recovery after bending
• Bed Adhesion: Strong with proper setup
• Warping: Minimal
• Stringing: Lower than softer TPU grades

S-Flex 90A is engineered to minimize common TPU challenges while delivering consistent, repeatable results.

Why Users Choose Spectrum S-Flex 90A

Users choose Spectrum S-Flex 90A for its dependable combination of flexibility, durability, and ease of use. It allows makers, engineers, and small businesses to produce high-quality flexible parts without the complexity typically associated with very soft materials.

The Polar White color is especially popular for clean prototypes, branding-focused parts, and applications where a neutral base is preferred.

Print Flexible Parts with Precision

Upgrade your material capabilities with Spectrum S-Flex 90A Polar White. Whether you're prototyping or producing end-use components, this filament delivers reliable flexibility, durability, and professional results.