SUNLU TPU Silk

Flexible Strength with a Glossy, Satin Finish

SUNLU TPU Silk filament combines the flexibility and durability of thermoplastic polyurethane (TPU) with a smooth, satin-like appearance. Designed for projects that require both functional strength and visual appeal, this filament produces parts that are elastic, resilient, and polished. It’s an excellent choice for applications like phone cases, wearables, seals, and protective gear where flexibility and aesthetics are equally important.

With a shore hardness of around 98A, this material offers a great balance between softness and structural integrity. Finished prints bend and stretch without tearing, while the silky surface highlights details with a refined, glossy look. This makes it ideal for users who want their flexible parts to stand out visually as well as perform reliably.

Despite TPU’s reputation for being challenging to print, SUNLU TPU Silk is engineered for consistent, clog-free extrusion. It prints smoothly across a wide range of settings, particularly with direct drive extruders, though it can also work on Bowden setups with proper tuning. The material resists stringing and warping, allowing users to achieve clean, high-quality results without excessive adjustments.

In addition to its flexibility and style, this filament is abrasion-resistant and holds up well under mechanical stress, making it a dependable option for functional prototypes, everyday accessories, and artistic creations alike.