AT-205 Re-Seal is a fast, effective and safe stop-leak for all rubber seals and gaskets. The exclusive formulation restores worn or dried out seals and is not harmful to internal bearings and components. Stops leaks in: Engine - Gasoline and Diesel, Transmission - Automatic and Manual, Power Steering - Rack & Pinion and Steering Box, Differential - Conventional, Limited Slip and Locker, Hydraulic Systems - Plows, Lifts, Jacks and Industrial Equipment. Do not use in brakes.