Thermal Zero Inc. makes USA-built high-temperature insulation for turbochargers, exhaust systems and piping, with a particular focus on fitted turbo and manifold blankets. Based in Reading, Ohio, the company also produces lava-rock sheathing that can withstand up to 3,000°F of radiant heat and supplies thermal-control products for automotive, industrial and marine applications. Its product range includes both universal designs and precision-fit blankets for specific engines and turbo systems.