Our silicone rubber conductive shielding strips integrate high-purity silicone's environmental resistance with advanced conductive filler technology, engineered to provide reliable EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference) shielding for electronic, automotive, and aerospace equipment. Backed by 18+ years of conductive material R&D and precision extrusion experience, we deliver consistent shielding performance and tailored solutions for global clients.
Our silicone rubber conductive shielding strips integrate high-purity silicone's environmental resistance with advanced conductive filler technology, engineered to provide reliable EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference) shielding for electronic, automotive, and aerospace equipment. Backed by 18+ years of conductive material R&D and precision extrusion experience, we deliver consistent shielding performance and tailored solutions for global clients.
Advanced Formulation & Core Performance Advantages
We craft silicone rubber conductive shielding strips using high-grade methyl vinyl silicone rubber as the base, blended with high-purity conductive fillers (silver-plated copper, nickel-plated graphite, or carbon black) via dual-screw mixing. This optimized formulation forms a continuous conductive network, ensuring both shielding efficiency and silicone's inherent durability:
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Superior shielding: Shielding effectiveness (SE) reaches 60-100dB at 10MHz-10GHz, meeting MIL-STD-461 and IEC 61340-5-1 standards. Silver-plated copper versions achieve SE ≥90dB (1GHz), suitable for high-precision electronic scenarios; carbon black versions offer SE 60-70dB for cost-sensitive applications.
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Stable electrical conductivity: Volume resistivity ≤10⁻³ Ω·cm (silver-plated copper), ≤10⁻¹ Ω·cm (nickel-plated graphite), maintaining stable conductivity after 1000h aging test at 150℃—no significant resistance increase.
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Industrial-grade environmental resistance: Retains shielding performance and elasticity in -60℃ to 220℃, resists UV radiation, ozone, oil, and mild chemicals. After 5000h outdoor exposure, SE decreases by ≤5dB, far exceeding traditional conductive rubber.
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Excellent mechanical properties: Tensile strength ≥6MPa, elongation at break ≥300%, compression set ≤15% (72h at 150℃). Withstands 10,000+ opening/closing cycles without cracking, ideal for frequently accessed electronic enclosures.
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Dimensional precision: Adopts custom extrusion dies with CNC machining, controlling cross-sectional tolerance within ±0.05mm. Supports common cross-sections (D-shaped, rectangular, U-shaped) and sizes (thickness 1mm-30mm, width 2mm-50mm).
Precision Manufacturing & Strict Quality Control
Our silicone rubber conductive shielding strips undergo a specialized production process with multi-stage testing to ensure shielding consistency and reliability:
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Conductive filler dispersion: Dual-screw mixing at 120-140℃ ensures uniform distribution of conductive fillers (agglomeration rate ≤0.5%), forming a continuous conductive path without weak points.
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Extrusion & vulcanization: Precision extrusion at constant temperature (180-200℃) and pressure (15-20MPa) forms strips with uniform cross-sections. High-temperature vulcanization (200℃ for 10min) stabilizes the conductive network and silicone structure.
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Shielding效能 testing: Each batch undergoes SE testing via coaxial transmission line method (ASTM D4935), resistance testing with four-probe method, and environmental aging tests. Only products meeting SE ≥60dB are shipped.
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Surface finishing: Deburring and cleaning remove surface impurities that may affect conductivity, ensuring stable contact with enclosure surfaces. Custom adhesive backing (3M conductive tape) is applied with uniform pressure for consistent bonding.
Key Application Scenarios & Technical Verification
Our silicone rubber conductive shielding strips have been validated in 300+ enterprise applications, solving core EMI/RFI interference pain points in high-precision scenarios:
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Consumer Electronics: Used as shielding strips for smartphone casings, laptop hinges, and tablet enclosures. A smartphone manufacturer reported that after application, EMI interference was reduced by 80%, passing FCC Part 15 certification smoothly.
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Automotive Electronics: Applied as shielding gaskets for automotive infotainment systems, battery management modules (BMS), and radar sensors. A new energy vehicle factory achieved SE ≥85dB, meeting ISO 11452-2 automotive EMC standards.
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Aerospace & Defense: Serves as shielding strips for avionics enclosures and radar equipment. Silver-plated copper versions provide SE ≥100dB, withstanding -60℃ to 220℃ extreme temperatures in aerospace environments.
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Industrial Automation: Used for PLC control cabinets, frequency converter enclosures, and sensor shielding. A manufacturing plant reduced equipment malfunction caused by EMI by 70%, improving production efficiency by 15%.
Custom Solutions & Efficient Service
We provide personalized customization and one-stop service to meet diverse shielding requirements:
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Multi-dimensional customization: Customize conductive filler type (silver-plated copper/nickel-plated graphite/carbon black), shielding效能 (60-100dB), cross-sectional shape (standard or special-shaped), size (thickness 1mm-30mm), and color (black, gray, custom matching).
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Functional upgrades: Optional conductive adhesive backing (3M 9760), flame-retardant (UL94 V-0), and anti-static treatments. For aerospace applications, we offer low-outgassing formulations meeting NASA SP-R-0022A standards.
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Fast response mechanism: Provide technical consultation and quotation within 24 hours; deliver custom samples for shielding testing in 5-7 working days; monthly production capacity of 30 tons ensures bulk delivery in 10-12 days.
Why Choose Us? Core Advantages
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Conductive Shielding Expertise: Dedicated R&D team optimizes filler ratio and dispersion process for different shielding levels, with targeted solutions for high-frequency (≥1GHz) and extreme environment scenarios—unlike general silicone manufacturers.
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Proven Quality & Certification: All products meet MIL-STD-461, IEC 61340, and RoHS standards; served 300+ global clients including electronics and automotive manufacturers. The product qualification rate has remained above 99.7% for 5 consecutive years.
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Global Service Capability: Adhere to "integrity first, quality first," with multilingual technical support (English, German, Japanese) and global logistics cooperation. Provide complete test reports and certification documents to facilitate client EMC audits.
