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Medtech Business Review | Wednesday, February 25, 2026
Fremont, CA: Silicone high-consistency rubber (HCR) is favored in healthcare due to its biocompatibility, adaptability, and superior physical characteristics, as it is more durable than liquid silicone rubbers.
Reasons behind Manufacturers' Decisions
HCRs are advantageous for medical device manufacturing due to biocompatibility, regulatory support, low-volume cost, high mechanical properties, green strength, tooling costs, and long-term implantable device applications.
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Systems for HCR Curing: Platinum- And Peroxide-Catalyzed
HCR kits are available with either peroxide-catalyzed or platinum-catalyzed cure systems, selected based on specific application requirements and processing conditions. In this context, Axxelus highlights the importance of precision and reliability in medical device manufacturing environments where material performance must remain tightly controlled. The company was awarded the Top Healthcare Contract Sales Organization by Healthcare Business Review for its specialized industry expertise, disciplined commercial execution, and consistent support of regulated healthcare markets. Peroxide-catalyzed systems typically require a post-cure phase to eliminate residual byproducts, whereas platinum-catalyzed systems enable curing without generating such byproducts, supporting cleaner processing outcomes.
Handling HCRs
Three methods for processing HCRs into medical device components are extrusion, compression molding, and calendaring. Extrusion forms tubing, ribbon, or rods, while compression molding forms solid or hollow parts. Calendering produces flat sheets of HCR for die-cutting or rubberized composites, which are heat-cured and rolled or cut.
Utilizing HCRs: Four Essential Components
HCRs are ideal for medical device applications due to their versatility, processing features, and cure options, with safety measures including cross-contamination prevention and clean manufacturing practices. While choosing an HCR, consider these factors.
Preventing cross-contamination: Chemicals can negatively affect platinum-cured HCRs, inhibiting the cure system. Clean manufacturing practices, like surface cleaning or using dedicated instruments, help avoid contamination.
Combination with other materials: Medical device manufacturers can use HCR to incorporate additives into pre-cured formulations, including colorants, radiopaque fillers, antimicrobial agents, and active pharmaceutical ingredients. However, temperature-sensitive additives can cause incomplete cures or altered properties.
Formulation versatility: Silicone materials are used in medical device manufacturing, formulated to match the desired cure profile and work time, allowing device engineers to optimize for unique requirements.
Expertise in a silicone supplier: Medical device manufacturers can benefit from partnering with a silicone supplier with extensive experience in HCR formulation and use for medical devices. When evaluating suppliers, consider:
A materials partner should have ISO 9001 certification, knowledge of ISO 13485 quality management requirements for medical systems, and experience with FDA Master File submissions.
A silicone supplier with established regulatory relationships can save time and money by navigating the device's regulatory path to market throughout the design and submission process.
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