Industrial Silicone Rubber Cerium Oxide Heat Stabilizer Heat Stabilizer Cerium oxide (CeO2) is an efficient heat resistant and anti-aging multi-functional additive in the silicone rubber system. Relying on the unique oxygen vacancy and Ce3+/Ce4+ reversible valence cycle, it significantly improves the thermal oxygen stability, weather resistance and mechanical properties of silicone rubber, and is suitable for all kinds of silicone rubber, such as high-temperature vulcanizatio