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Inkbit Unveils TEPU 50A Elastomer for 3D Printing Elastic Components Requiring Sealing, Precision, and Design Flexibility.

Medford, Mass. – November 7, 2023 – Inkbit™, a pioneer in advanced additive manufacturing solutions announces today, at Formnext, 2023, the availability of its new TEPU 50A elastomer. TEPU 50A is a thiol-ene polyurethane-based elastomer with a Shore 50A durometer and low compression set that offers excellent UV stability and strong chemical compatibility. TEPU 50A is the latest addition to the Inkbit Vista™ ecosystem, developed in response to customer requests for a Shore 45-55A elastomer that could accurately produce intricate detail in a wide range of geometries with excellent surface finish and elastic resilience.

TEPU 50A is the second elastomer to be offered by Inkbit and follows TEPU 30A (formally known as the Vulcan Soft Elastomer 30). Ideal for demanding applications that require a medium-soft shore hardness and optimal sealing and compression attributes.TEPU 50A is an excellent choice for replacing or prototyping soft rubber components, silicones, or molded TPUs that require precision and detailed features. Its suitability extends to various applications, including grommets, window and door seals, soft grippers, gaskets, and similar soft elastic components.

The new elastomer is not only a response to technical specifications but also addresses the real-world challenges faced by manufacturers when sourcing low-volume rubber-like components. Maximilian Neck, CEO of ProductionToGo, shared his enthusiasm for this new material solution: “Sourcing low-volume rubber-like components is a constant challenge for organizations. Traditional methods are expensive in small quantities and can take several weeks or months to procure, directly impacting overall production timelines,” said Neck. “Before TEPU 50A, we couldn’t find a soft 3D printed elastomer option that combined good surface finish accuracy, fine detail reproduction, and stable mechanical properties to mimic nitrile rubber or molded TPU. We are excited about having this option available.”

“TEPU 50A is the culmination of years of chemistry and process development driven by customers searching for an alternative to molded or cast silicones and rubbers for prototyping and beyond,” said Inkbit Co-Founder and CEO Davide Marini. “Our novel thiol-ene polyurethane-based chemistries enables us to print soft but resilient elastomers that are UV stable and have excellent chemical compatibility.”

Due to their high viscosity, chemistry limitations, and printing difficulties, typical commercially available 3D-printed elastomers on other technologies are challenging to print with, and the finished part properties degrade quickly under UV exposure. TEPU 50A’s part properties are highly stable due to a powerful thiol-ene chemical reaction during the print process, and Inkbit’s unique Vision Control Jetting (VCJ) with closed-loop feedback control ensures that parts are built quickly and accurately every time.

Outstanding elastomeric performance
In developing TEPU 50A, Inkbit targeted properties similar to those found in nitrile rubber and silicone applications in automotive and various other industrial applications where flexibility, sealing, and surface quality were critical.

Key attributes in TEPU 50A include:

  • 7.7% Compression Strength Set (23°C, 72 h).
  • 49A Shore Hardness.
  • 128% Elongation at Break.
  • -28°c Glass Transition Temp (DSC-Tg).
  • 9.4% change in Elongation at Break after 1000 hrs. of UV aging.
  • 0.3% weight gain after 5 days submerged in engine oil.

To learn more about TEPU 50A or to explore the Inkbit technology for your applications, visit or contact us at Inkbit will be exhibiting at Formnext, 2023, in Hall 12.1, Booth F19, and showcasing the new TEPU 50A and its other materials and unique additive manufacturing technology.

Inkbit’s TEPU™ 50A material is a soft-medium durometer elastomer offering advanced industrial production solutions
Protection grommet produced in TEPU™ 50A exhibits excellent UV stability and remarkable chemical compatibility
Valve cap benefitting from the flexibility of Inkbit’s TEPU™ 50A material

About Inkbit

Inkbit is an additive manufacturing company located in Medford, Massachusetts. The Inkbit Vista™ system is designed for mass production of end-use polymer 3D printed parts. Incorporating a novel technology called Vision-Controlled Jetting (VCJ), Inkbit delivers high-resolution additive manufacturing, enabling users to produce parts with extreme dimensional accuracy and precision at high volume. Using high-speed scanning, Inkbit delivers a material jetting platform with the throughput, precision, and materials required by the most demanding industrial applications. Learn more at

Sachin R Nalawade
Sachin R Nalawade
Founder and Editor DailyCADCAM. A highly-driven astute professional and avid marketer; equipped with a solid foundation in Academia; Manufacturing, CAD, CAM, CAE industry and Implementing Marketing Initiatives for Global Brands (All Design Software and Hardware Vendors).

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