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Exhibitors & products 2025

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DIAMANT Polymer GmbH

About us

Diamant Polymer GmbH – Innovative Sealing Solutions for Additive Manufacturing

Diamant Polymer GmbH has been developing and producing high-performance polymer solutions for industrial applications for decades. Our core expertise lies in highly filled high-performance polymer systems and low-viscosity, capillary-active sealers that reliably close porosity and make parts impermeable to liquids and gases. With this technology, we unlock new opportunities for additive manufacturing: targeted sealing not only improves quality and functionality, but also increases cost efficiency – for example by enabling lighter structures, reducing material consumption and shortening printing times.

At Formnext, we will present sealing solutions specifically developed for 3D printing, designed to make additively manufactured components market-ready and durable. Our mission: to support service providers and distributors in reliably sealing, functionalizing and economically optimizing printed parts.

Sealing Solutions for Additive Manufacturing

Our product portfolio includes:

  • Surface Sealers – low-viscosity, capillary-active systems that deeply penetrate pores, close porosity and ensure long-term tightness, even under demanding fluid or gas loads.

  • Functional Sealers – sealers that can be enhanced with additives such as UV protection, electrical conductivity, or improved chemical resistance, enabling targeted functionalization of 3D-printed parts.

  • Repair & Gap-Filling Systems – polymer systems for repairing, filling and reworking printed parts, helping to reduce scrap and improve efficiency.

  • Customized Solutions – tailored sealing systems developed to meet the specific requirements of our partners and their end customers.

Application Examples

Our sealing technology is already successfully used in a wide range of additive manufacturing applications:

  • Fluid channels and valves: Sealed parts remain leak-tight, even under pressure.

  • Outdoor housings: UV-stable sealers provide reliable protection against weathering and extend service life.

  • Underwater drones and marine applications: Sealed components remain liquid- and gas-tight – even during continuous underwater operation.

  • Eyewear frames: Sealers with UV protection and surface refinement enable attractive, durable and long-lasting designs.

  • Large-scale parts for the oil and gas industry: Increased chemical resistance, tightness and durability under extreme conditions.

Benefits for Distributors and Service Providers

  • Portfolio expansion: Offer customers clear added value with sealing and functionalization solutions for additive manufacturing.

  • Ease of use: Our sealers are designed for practical application and can be easily integrated into existing production and post-processing workflows.

  • Cost efficiency: Save printing material and time by producing thinner, lighter structures that become tight and functional through sealing.

  • Reliability: Decades of expertise, proven quality and secure supply chains from a trusted German manufacturer.

Partnering Opportunities

At Formnext we are particularly looking to connect with:

  • Distributors of 3D printing materials, systems and accessories interested in expanding their portfolio with innovative sealing solutions.

  • Additive manufacturing service providers who want to seal, functionalize and enhance their parts to access new markets.

Together, we develop strategies to make 3D printing not only faster and more precise, but above all tighter, more durable and more economical.

About Diamant Polymer GmbH

Based in Mönchengladbach, Germany, Diamant Polymer GmbH has stood for innovation, quality and customer proximity for more than 130 years. Rooted in polymer chemistry, our focus is firmly set on the future: additive manufacturing is one of our key growth fields, where we apply and expand our expertise.

Our promise: We make 3D-printed parts tight – and better.

Meet us at Formnext – and discover how additively manufactured components become truly market-ready products.

Keywords

  • UV protection
  • Porosity sealing
  • Diamant Polymer GmbH
  • dichtol
  • Watertight
  • post-processing
  • sealing solutions