An ADS Field Tile Plug, 8" Solid, is a drainage fitting designed to seal off the end of an 8-inch single-wall corrugated drainage pipe, preventing water from flowing out. It's typically made of high-density polyethylene (HDPE) for durability and resistance to corrosion. These plugs are often used in conjunction with ADS single-wall corrugated pipe to create a complete and leak-resistant drainage system.