EPU 41
EPU 41
Polyurethane Elastomer for 3D Printing - Carbon DLS
EPU 41 Carbon 3D (DLS) – Advanced Polyurethane Elastomer for 3D Printing
EPU 41 Carbon DLS is a next-generation polyurethane elastomer developed by Carbon using Digital Light Synthesis™ (DLS) technology. Engineered for superior elasticity, tear strength, and precise energy return, this material enables the production of technical components that combine durability, flexibility, and reliability over time.
With its advanced formulation, EPU 41 delivers the perfect balance between resilience and softness, making it ideal for shock absorption, vibration damping, and repeated mechanical stress. Its mechanical behavior and consistent surface quality make it a top choice for engineers seeking a functional and high-end 3D printing material.
Biocompatible according to ISO 10993-5 and 10993-10 standards.
Performance and Material Characteristics
The EPU 41 polyurethane elastomer for 3D printing combines outstanding mechanical strength with design versatility, offering properties that stand out among Carbon’s DLS materials:
High Elasticity: efficiently absorbs deformation and impact without losing shape or performance.
Tear Resistance: withstands high mechanical loads, ideal for industrial and functional parts.
Energy Return: quickly regains its original geometry after compression, improving part longevity and comfort.
With a Shore A hardness around 70, similar to standard TPU, EPU 41 offers enhanced resistance to continuous mechanical stress and environmental variation, ensuring exceptional reliability in demanding operating conditions.
Its biocompatibility (ISO 10993-5 and ISO 10993-10) makes it suitable for wearable, consumer, and medical applications requiring skin contact and safety.
Lattice Design for Tailored Flexibility
One of EPU 41’s most innovative advantages is the ability to create customizable lattice structures during the printing process. These lightweight, reticulated geometries allow engineers to fine-tune the elasticity in different zones of a single component.
This capability enables designers to balance cushioning, support, and flexibility, optimizing comfort, mechanical behavior, and weight reduction simultaneously.
EPU 41’s smooth surface finish and dimensional precision also make it visually refined, ideal for both industrial applications and consumer-facing products.
Superior Impact Absorption and Durability
EPU 41 Carbon 3D is engineered for high-performance cushioning. Its unique combination of elasticity, tear resistance, and calibrated energy return allows it to absorb shocks efficiently while maintaining consistent rebound behavior.
Lattice-printed structures deliver enhanced comfort and controlled responsiveness, even under prolonged or repetitive use. The material’s isotropic mechanical properties ensure uniform performance in every direction — a key advantage for functional designs exposed to cyclic loading.
Thanks to its chemical resistance and thermal stability, EPU 41 remains reliable in challenging environments involving vibration, stress, and temperature variations.
Industrial and Design Applications
- Applications requiring elasticity and long-term durability.
- Covers, gaskets, and, in general, components subjected to torsion.
- Resistant to chemicals and temperature fluctuations.
The polyurethane resin EPU 41 Carbon DLS is ideal for applications that demand a unique combination of flexibility, strength, and longevity, including:
Shock-absorbing components and vibration dampers
Flexible seals, gaskets, and protective covers
Cushioned inserts for wearables or sports equipment
Lattice-based comfort zones in seating or footwear
Automotive and industrial parts exposed to torsion and repetitive stress.
Available in an elegant matte black finish, EPU 41 provides both functional performance and a professional aesthetic.
Case Study – Innovation in Cycling with Selle Italia
A striking example of EPU 41’s capabilities is the collaboration between Prototek and Selle Italia, a global leader in high-end bicycle saddles.
Prototek supplied EPU 41 Carbon 3D for the production of Selle Italia’s revolutionary 3D-printed saddles, including SLR Boost 3D, Novus Boost Evo 3D, WATT 3D, and Shortfit 2.0 3D (Selle San Marco).
These products showcase how EPU 41’s advanced cushioning and elasticity can deliver personalized comfort, mechanical strength, and long-term performance. The lattice geometry ensures progressive flexibility and optimized ventilation, enhancing both comfort and efficiency for cyclists.
This collaboration demonstrates how the polyurethane resin EPU 41 Carbon DLS can redefine technical design not only in cycling but also in footwear, protective gear, and ergonomic accessories, where controlled flexibility and energy management are crucial.
Discover all the technical details and the process in our complete CASE STUDY.
Prototek – Your Partner for Advanced Elastomer 3D Printing
At Prototek, we provide access to EPU 41 Carbon 3D, offering manufacturers, designers, and R&D teams the ability to produce custom, high-performance elastomeric parts with Carbon DLS technology.
Whether you’re developing durable seals, shock-absorbing mounts, or ergonomic lattice structures, EPU 41 Carbon DLS polyurethane resin ensures precision, reliability, and lasting performance.
Contact Prototek to discover how this polyurethane elastomer for 3D printing can transform your next project, combining innovation, comfort, and structural integrity in a single material.
