Silicone rubber thermal expansion molding is a process that employs silicone rubber and expandable fillers to produce complex, dimensionally stable parts. The process involves introducing expandable fillers into a silicone rubber compound, which expand under heat, creating internal pressure that forces the rubber against the mold walls. This expansion results in highly detailed parts with consistent dimensions, intricate geometries, and excellent sealing properties, making it suitable for applications in various industries, including automotive, medical, and electronics.