Overmolding & Bonding
Encapsulation, bonding, and protection with medical-grade silicone
Precision overmolding for
high-performance components
Silicone overmolding combines the inherent benefits of silicone rubber with other substrates—such as plastics, metals, and electronics—to create multi-functional, high-performance components. This process enables the encapsulation of sensitive electronics, improved ergonomics, and enhanced sealing and protection in medical devices. Whether using Liquid Silicone Rubber (LSR) or High Consistency Rubber (HCR), Cirtec offers expertise in precision overmolding for complex, multi-material designs.
Our Overmolding and Bonding Capabilities
Silicone overmolding offers robust encapsulation, precision bonding, and ergonomic enhancements for implantable devices and surgical tools. Cirtec’s expertise in LSR and HCR techniques ensures biocompatibility, dimensional accuracy, and long-term performance in even the most demanding medical applications.
- Biocompatible Sealing and Encapsulation: Protects sensitive electronics and components within implantable devices while ensuring long-term reliability and sterility.
- Superior Bonding: Provides excellent adhesion between silicone and substrates like stainless steel, polycarbonate, PEEK, and ABS, preventing separation even under stress.
- Enhanced Ergonomics: Overmolded silicone adds soft-touch surfaces to instruments, improving grip, comfort, and usability during surgical procedures.
- Durable, Sealed Components: Offers chemical resistance and waterproof sealing, making it ideal for reusable devices and products requiring frequent sterilization.
- Implantable Devices and Neurostimulators: Encapsulation of batteries, sensors, and electronics within silicone to protect against bodily fluids and corrosion.
- Surgical Tools and Instruments: Soft overmolded grips and coatings for ergonomic handles and precision instruments. Overmolded keypads and housings for medical equipment.
- Seals, Valves, and Connectors: Overmolded gaskets and seals to ensure reliable connections in infusion pumps, valves, and diagnostic tools.
Cirtec’s overmolding processes are optimized to ensure precision and durability:
- LSR Overmolding: Ideal for high-volume production, offering flash-free finishes and excellent adhesion with minimal shrinkage.
- HCR Overmolding: Best suited for manual and low-volume production, providing increased mechanical strength for heavy-use applications.
- Substrate Adhesion: Ensuring strong bonding between silicone and other materials.
- Shrinkage Control: Managing dimensional stability to meet tight tolerances.
- Precision Tolerances: Maintaining accuracy for critical medical applications.
Why Choose Cirtecfor Overmolding and Bonding?
- Mold Design Expertise: Optimized designs to control shrinkage and maintain part integrity.
- Material Pre-Treatment & Surface Activation: Improves silicone adhesion, ensuring reliable performance.
Cirtec offers end-to-end expertise in both LSR and HCR overmolding, providing support from early design consultation and prototyping through to high-volume production. All manufacturing is conducted in cleanroom environments with rigorous quality control processes that meet the stringent regulatory standards required for medical-grade components.
Enhance 
durability and
comfort in
medical
devices
that last
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