NIO ET9 and BYD Seal EVs now integrate silicone foam rubber-glass sealing systems, reducing weight 40% versus conventional rubber and extending range. WACKER’s 3D-crosslinked silicone rubber—plasticized with silicone oil—retains elasticity at -40°C, eliminating cold-climate door seal failures. With 90% recyclability aligning with the EU Battery Regulation, automotive silicone demand is projected to hit CNY 10 billion by 2025.
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