High-Performance Flexible TPU for Functional Prints

Spectrum S-Flex 90A Filament in Polar White is a premium TPU material engineered for users who need durability, flexibility, and reliable print performance. With a Shore hardness of 90A, it strikes an ideal balance between elasticity and structural integrity—making it suitable for both functional prototypes and end-use parts.

Designed for ease of use compared to softer TPU materials, S-Flex 90A prints consistently on a wide range of FDM/FFF 3D printers, making it accessible for hobbyists while still meeting the demands of professional users.

Key Features & Benefits

• Balanced Flexibility (90A Shore Hardness)
  Offers excellent elasticity while maintaining shape and strength
• Improved Printability
  Easier to handle than softer TPU grades, reducing jams and stringing
• Durable & Impact Resistant
  Ideal for parts exposed to stress, bending, and repeated use
• Strong Layer Adhesion
  Produces reliable, long-lasting prints with minimal delamination
• Smooth Surface Finish
  Clean, professional-looking results in a neutral Polar White color
• Chemical & Abrasion Resistance
  Suitable for functional environments and demanding applications

Typical Applications

Spectrum S-Flex 90A is widely used for parts that require flexibility and durability:

• Protective cases and covers
• Gaskets, seals, and dampeners
• Flexible hinges and connectors
• Wearables and ergonomic grips
• RC components and automotive parts
• Vibration-absorbing mounts
• Footwear prototypes and soft-touch parts

Material & Compatibility

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

Compatible with most FDM/FFF 3D printers that support flexible filaments. For best results:

• Use a direct drive extruder (recommended)
• Bowden setups may require slower speeds and tuning
• Heated bed improves adhesion
• Works well on surfaces like PEI, glass (with adhesive), or textured build plates

Printability & Performance

• Ease of Printing: Moderate (easier than softer TPU like 85A)
• Bed Adhesion: Good with proper surface prep
• Warping: Minimal
• Stringing: Reduced compared to softer flexible filaments

This filament is designed to minimize common TPU challenges while maintaining excellent mechanical performance.

Why Users Choose Spectrum S-Flex 90A

Users choose Spectrum S-Flex 90A for its reliable balance of flexibility and printability. It’s a go-to solution for makers and professionals who need flexible parts without the frustration often associated with TPU materials.

Whether you're prototyping or producing functional components, this filament delivers consistent results with excellent mechanical properties and a clean finish.

Ready to Print Flexible, Functional Parts?

Upgrade your material capabilities with Spectrum S-Flex 90A Polar White. Whether you're creating durable prototypes or end-use flexible components, this filament delivers the performance, reliability, and ease of use you need.