Durable Flexible TPU Filament for Functional 3D Printing

Spectrum S-Flex 90A Filament in Deep Black is a high-quality TPU material designed for users who need flexibility without sacrificing strength or print reliability. With a Shore hardness of 90A, this filament provides an ideal combination of elasticity and rigidity, making it suitable for both prototyping and real-world functional parts.

Compared to softer TPU materials, S-Flex 90A offers improved handling and more consistent extrusion, making it a strong choice for both hobbyists and professionals looking for dependable flexible filament performance.

Key Features & Benefits

• 90A Shore Hardness Balance
  Flexible yet firm enough for structural integrity and precise prints
• Enhanced Printability
  Easier to print than softer TPU variants, reducing clogging and feeding issues
• Excellent Durability
  High resistance to wear, impact, and repeated flexing
• Strong Layer Adhesion
  Produces reliable parts with minimal risk of delamination
• Professional Deep Black Finish
  Clean, consistent color ideal for functional and aesthetic parts
• Resistant to Abrasion & Chemicals
  Suitable for demanding environments and long-term use

Typical Applications

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

• Protective cases and enclosures
• Flexible joints, hinges, and connectors
• Seals, gaskets, and dampeners
• Tool grips and ergonomic handles
• Automotive and RC components
• Vibration isolation parts
• Wearables and soft-touch products

Material & Compatibility

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

Compatible with most FDM/FFF 3D printers capable of handling flexible filaments. For best results:

• Direct drive extruders are recommended
• Bowden systems can be used with reduced speeds and tuning
• Heated bed improves adhesion and consistency
• Works well on PEI sheets, textured plates, and glass with adhesive

Printability & Performance

• Ease of Printing: Moderate and user-friendly for TPU
• Bed Adhesion: Strong with proper setup
• Warping: Minimal
• Stringing: Reduced compared to softer TPU grades

S-Flex 90A is engineered to reduce common TPU challenges while maintaining excellent mechanical performance and repeatability.

Why Users Choose Spectrum S-Flex 90A

Spectrum S-Flex 90A stands out for its balance of flexibility, strength, and ease of use. It’s a reliable solution for makers, engineers, and small businesses producing functional parts that must withstand real-world use.

The Deep Black color provides a clean, professional appearance, making it suitable for both visible components and end-use products.

Print Flexible Parts with Confidence

Take your 3D printing capabilities further with Spectrum S-Flex 90A Deep Black. Whether you're prototyping or producing durable flexible components, this filament delivers consistent, high-quality results you can rely on.