Flexible TPU Filament for Durable, Professional-Grade Prints

Spectrum S-Flex 90A Filament in Deep Black is a high-quality TPU material designed for users who need flexible, impact-resistant parts with consistent print performance. With a Shore hardness of 90A, it provides an excellent balance between elasticity and structural integrity—ideal for both prototyping and real-world applications.

The Deep Black color delivers a clean, professional appearance, making it suitable for both functional components and finished products.

Key Features & Benefits

• Balanced 90A Shore Hardness
  Combines flexibility with enough rigidity for structural performance
• Improved TPU Printability
  Easier to print than softer TPU materials with stable extrusion
• High Durability & Impact Resistance
  Designed for repeated flexing and long-term use
• Strong Layer Adhesion
  Ensures consistent, reliable parts with excellent bonding
• Deep Black Finish
  Clean, professional look for end-use parts and prototypes
• Abrasion & Chemical Resistance
  Suitable for demanding environments and functional applications

Typical Applications

Spectrum S-Flex 90A is ideal for flexible and semi-flexible components such as:

• Protective cases and enclosures
• Flexible hinges and connectors
• Gaskets, seals, and dampeners
• Ergonomic grips and handles
• Wearables and soft-touch parts
• Automotive and RC components
• 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 optimal control
• Bowden setups can be used with slower speeds and tuning
• Heated bed improves adhesion and consistency
• Works well on PEI sheets, textured build plates, or glass with adhesive

Printability & Performance

• Ease of Printing: Moderate and user-friendly for TPU
• Surface Finish: Smooth with a slightly satin flexible texture
• Flexibility: High with excellent recovery after deformation
• Bed Adhesion: Strong with proper setup
• Warping: Minimal
• Stringing: Reduced compared to softer TPU filaments

S-Flex 90A is engineered to minimize common TPU challenges while delivering reliable, repeatable results across different printer setups.

Why Users Choose Spectrum S-Flex 90A

Makers, engineers, and small businesses choose Spectrum S-Flex 90A for its dependable combination of flexibility, durability, and ease of use. It enables efficient production of functional flexible parts without the complications often associated with softer TPU materials.

The Deep Black color adds a professional finish, making it ideal for both prototypes and production-ready components.

Print Flexible Parts with Confidence

Choose Spectrum S-Flex 90A Deep Black to create flexible, durable components with consistent quality. Whether for prototyping or end-use applications, this filament delivers performance you can rely on.