What is Conductive Silicone Rubber?

Conductive silicone rubber combines the superior environmental sealing and thermal stability of silicone elastomers with the electrical conductivity of metal-filled compounds. By dispersing conductive particles (e.g., silver-plated aluminum, nickel-coated graphite) within a silicone or fluorosilicone matrix, this material simultaneously delivers EMI/RFI shielding, electrical grounding, and robust sealing in demanding environments. 

• Electrical Conductivity — Achieves from semi-conductive levels to highly conductive states by adding fillers such as silver, nickel, carbon or gold. 
  
• Thermal Stability — Operates reliably across wide temperature ranges (commonly –55 °C to +200 °C or higher in specialized trims). 
  
• Flexibility & Elasticity — Maintains pliability under mechanical stress and vibration, essential for gasket and sealing applications. 
  
• Chemical & Environmental Resistance — Resists oils, solvents, UV, ozone and moisture, ensuring long-term durability. 
  
• Formability & Integration — Supports sheets, extrusions, die-cut parts or molded profiles enabling versatile manufacturing.

Engineers have a wide array of electrically conductive silicones to choose from, depending on the application and performance requirements.

The main types include:

• • EMI/RFI Shielding Materials: Silicones filled with conductive particles like nickel-coated graphite or silver are used for electromagnetic interference (EMI) and radio frequency interference (RFI) shielding in electronic devices.
  • Thermal Interface Materials (TIMs): These materials combine thermal and electrical conductivity, serving as interfaces between heat-generating components and heat sinks or spreaders.
  • Conductive Elastomers: These flexible materials are often used in gaskets, seals, and keypads. Their combination of electrical conductivity and mechanical resilience makes them suitable for harsh environments.
    
  • Extruded Conductive Silicone Strips: Continuous lengths of filled silicone for ribbon shielding, cable wrap, or frame grounding.
  • Die-Cut Gaskets & Profiles: Pre-cut or custom-extruded silicone seals combining conductive fillers and sealing functionality for enclosures.
  • Carbon-Based Conductive Silicones: These are lightweight and cost-effective alternatives for applications requiring moderate conductivity, such as antistatic coatings and ESD (electrostatic discharge) protection.

Applications

• EMI/RFI Shielding Gaskets: For electronic housings and enclosure seams.
• Chassis and Enclosure Seals: Provides grounding and environmental sealing.
• Connector and Interface Pads: Ensures stable electrical contact and signal grounding.
• Display and Touch Panel Frames: Prevents EMI leakage and static buildup.
• PCB Ground Pads: Replaces metal contacts for consistent conductivity.
• Battery Pack Sealing: Offers conductive and heat-resistant protection.
• Waveguide and Filter Seals: Ensures low-resistance shielding performance.
• Custom Molded or Extruded Parts: Designed for complex sealing and grounding needs.

Custom Solutions