Nickel-Aluminum Silicone EMI Shielding Elastomer
SSP2529
Corrosion-Resistant Conductive Silicone for EMI/RFI Gaskets
SSP2529 is an approximately 68-durometer silicone elastomer filled with nickel-plated aluminum, engineered to deliver EMI/RFI shielding along with enhanced galvanic-corrosion resistance. This formulation is specifically beneficial in marine, salt-fog, and mixed-metal environments where silver-filled EMI gaskets may corrode or degrade over time.
Material Overview
- Base Polymer: Silicone (≈ 68 Shore A)
- Conductive Filler: Nickel-plated aluminum
- Form Availability: Supplied as cured sheet material, extruded profiles, or moldable compound
- Shielding Performance: Minimum attenuation of ~93 dB at 10 GHz. Best-case attenuation of ~135 dB at lower frequencies (typical 80 MHz testing)
- Corrosion Resistance: Demonstrated excellent galvanic stability in salt-fog and mixed-metal environments with negligible flange loss
- Mechanical Properties: Stable tensile, elongation, and compression characteristics suitable for cut-gasket designs
Key Features
- Corrosion-Resistant Filler System – Nickel-aluminum construction significantly reduces galvanic corrosion compared to silver-filled elastomers, especially when used with aluminum housings.
- Balanced EMI Shielding and Environmental Durability – Provides practical EMI attenuation with superior corrosion resistance for long-term deployment.
- Versatile Supply Formats – Delivered as sheet, extrusion, or compound, enabling fabrication of nearly any gasket geometry.
- Cost-Effective Alternative to Silver-Filled Materials – Offers reliable shielding performance without the cost or corrosion risk associated with silver fillers.
Applications
- Marine and naval electronics exposed to salt air or salt spray
- Outdoor telecom equipment in coastal climates
- Aluminum or mixed-metal housings where galvanic corrosion is a concern
- Industrial control equipment in moisture-prone or chemically exposed areas
- Ground vehicle electronics operating in corrosive or wet environments
- EMI/RFI interfaces requiring durability, long life, and chemical resistance
Data Sheets
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