Flexible TPU Filament for Durable, High-Impact Parts

Spectrum S-Flex 90A Filament in Bloody Red is a premium TPU material engineered for flexibility, durability, and consistent printing performance. With a Shore hardness of 90A, it offers a reliable balance between elasticity and strength, making it ideal for both prototyping and functional end-use parts.

Designed for easier handling compared to softer TPU filaments, S-Flex 90A delivers smooth extrusion and predictable results across a wide range of FDM/FFF 3D printers.

Key Features & Benefits

• Balanced 90A Shore Hardness
  Combines flexibility with structural stability for functional parts
• Enhanced Printability
  Easier to print than softer TPU materials with fewer feeding issues
• High Durability & Impact Resistance
  Suitable for repeated flexing and demanding real-world use
• Strong Layer Adhesion
  Produces reliable parts with minimal risk of delamination
• Bold Bloody Red Finish
  Deep, vibrant color ideal for standout designs and visible components
• Abrasion & Chemical Resistance
  Designed for long-term use in challenging environments

Typical Applications

Spectrum S-Flex 90A is ideal for a wide range of flexible applications:

• Protective cases and covers
• Flexible hinges and connectors
• Gaskets, seals, and dampeners
• Tool grips and ergonomic handles
• Wearable components and accessories
• Automotive and RC parts
• Vibration isolation mounts

Material & Compatibility

• Material Type: TPU (Thermoplastic Polyurethane)
• Diameter: 1.75mm
• Spool Weight: 0.25kg

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

• Direct drive extruders recommended for best results
• 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 beginner-friendly for TPU
• Surface Finish: Smooth with a slightly satin flexible feel
• Bed Adhesion: Strong with proper setup
• Warping: Minimal
• Stringing: Reduced compared to softer TPU filaments

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

Why Users Choose Spectrum S-Flex 90A

Spectrum S-Flex 90A is trusted by makers, engineers, and small businesses for its dependable performance and ease of use. It enables users to produce flexible, durable parts without the difficulty typically associated with very soft materials.

The Bloody Red color adds a bold, professional look, making it suitable for both functional parts and visually striking designs.

Print Flexible Parts with Confidence

Choose Spectrum S-Flex 90A Bloody Red to create durable, flexible components with consistent results. Whether for prototyping or production, this filament delivers performance you can rely on.