Permatex Permatex Automatic Transmission RTV Gasket Maker - 81180 is a high-quality gasket maker specifically designed for use in automatic transmissions. It is a silicone-based sealant that forms a durable and flexible gasket when cured. This gasket maker is resistant to transmission fluids and other automotive fluids, making it ideal for use in high-pressure environments. It can withstand temperatures of up to 500 degrees Fahrenheit and is suitable for use in both metal and plastic surfaces. This product is easy to use, dries quickly, and provides a reliable seal to prevent leaks and ensure smooth transmission operation.