Tung stand oil is a type of oil obtained from the tung tree (Vernicia fordii or Vernicia montana) seeds through a process called "standing." Standing is a method of heating the tung oil to high temperatures (usually around 250-300°C) for an extended period, typically several days or weeks. This process causes the oil to polymerize and thicken, resulting in tung stand oil.

Tung stand oil has similar properties to regular tung oil but with some differences. It is typically thicker and more viscous than raw tung oil, making it easier to apply as a finish on wood surfaces. It also dries more slowly, allowing for better penetration into the wood and resulting in a thicker, more durable finish.

Like raw tung oil, tung stand oil creates a hard, waterproof finish that enhances the natural beauty of wood while providing protection against moisture, scratches, and other damage. It is commonly used as a wood finish in fine woodworking and furniture making, as well as in various other applications such as in the production of paints, varnishes, and coatings.