Flexible TPU Filament with Bold Color and High Durability

Spectrum S-Flex 90A Filament in Bloody Red is a premium TPU material engineered for flexible, impact-resistant parts with reliable print performance. With a Shore hardness of 90A, it offers an ideal balance between elasticity and strength—perfect for both prototyping and end-use applications.

The deep Bloody Red color adds a bold, professional appearance, making it suitable for standout designs as well as functional components.

Key Features & Benefits

• 90A Shore Hardness for Controlled Flexibility
  Provides elasticity while maintaining structural stability
• Optimized TPU Printability
  Easier to print than softer TPU filaments with improved extrusion control
• High Durability & Impact Resistance
  Designed to withstand repeated bending and demanding environments
• Strong Layer Adhesion
  Ensures consistent, reliable prints with excellent interlayer bonding
• Rich Bloody Red Finish
  Deep, bold color ideal for aesthetic parts and branding applications
• Abrasion & Chemical Resistance
  Suitable for long-term functional use

Typical Applications

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

• Protective cases and enclosures
• 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 filaments:

• 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 build 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: Reduced compared to softer TPU materials

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

Why Users Choose Spectrum S-Flex 90A

Makers, engineers, and small businesses rely on Spectrum S-Flex 90A for its dependable performance and ease of use. It allows efficient production of flexible parts without the complexity often associated with softer TPU filaments.

The Bloody Red color adds a strong visual identity, making it ideal for branding, prototyping, and high-visibility applications.

Print Flexible Parts with Confidence

Choose Spectrum S-Flex 90A Bloody Red to create flexible, durable parts with consistent quality and bold visual appeal. Perfect for both prototyping and production workflows.