Whether it’s under the hood, in the dashboard, or in the tires, synthetic rubber gets vehicles going. The butyl rubber X_Butyl^®, the butadiene and styrene-butadiene rubbers Buna^® optimize tire sidewalls, treads, and inner liners. The EPDM rubber Keltan^® seals windows and doors. And hoses and lines with Levapren^® EVM rubber and Therban^® HNBR rubber in the sheathing withstand heat and oil.