Yes, ceramic fiber products are indeed used for sound insulation and vibration damping. They possess excellent thermal insulation properties, which also contribute to sound absorption. The porous structure of ceramic fibers allows them to reduce noise by impeding the passage of sound waves. Additionally, their flexibility and resilience make them effective in dampening vibrations. These characteristics make ceramic fiber products suitable for applications in industries where noise and vibration control are necessary, such as automotive, aerospace, and construction.