The UltraTech 2126 Ultra‑Drain Seal is a durable, reusable urethane pad designed to temporarily seal floor or storm drains during spill emergencies. Measuring 18″ × 18″ × .4″ and reinforced with a tear-resistant mesh core, it forms a tight seal on smooth surfaces—both top and bottom—effectively stopping oils, water, and most aggressive chemicals from entering drainage systems