HI-SIL® synthetic amorphous precipitated silica products are among the industry’s most trusted and proven products as reinforcing fillers for tires. AGILON® performance silica products are more than traditional reinforcing fillers. By precipitating silica and silane together and delivering them as a single, finished compounding solution, PPG has created a breakthrough technology that uniquely combines product and process, enabling industrial rubber and tire makers to enhance rubber performance, simplify their manufacturing processes and promote a healthier environment.