As summer thunderstorms intensify, waterproofing of electric vehicles has become critical. CATL's newly unveiled battery packs feature advanced silicone rubber sealing systems, recently tested in Guangdong floods where they survived 50cm-deep water immersion. The nano-silica reinforced material maintains IP68 waterproof standards with less than 8% compression set.

Industry reports indicate a 42% year-on-year decrease in water-related EV malfunctions from January to May 2023, with silicone rubber components contributing to 35% of this improvement. BYD engineers revealed their new models utilize liquid silicone rubber (LSR) injection-molded seals, boosting production efficiency by 60%. The China Association of Automobile Manufacturers forecasts annual demand for automotive silicone seals will exceed 120,000 metric tons by 2025.