Used primarily as a wood finish, tung oil penetrates deeply into wood fibers, providing a durable, water-resistant, and flexible protective coating. It enhances the natural grain and color of wood, making it popular for use on furniture, flooring, and decorative woodworking projects. Unlike synthetic finishes, it cures through polymerization, forming a hard, non-sticky surface that resists moisture and wear. Tung oil is also used in traditional oil-based paints, varnishes, and as a component in some caulks and sealants. Due to its natural origin and non-toxic cured state, it is favored in applications where food safety is a concern, such as cutting boards and butcher blocks. Additionally, it has historical use in waterproofing canvas, paper, and fabric.