Let the power of the vacuum work for you. Vetter vacuum leak drainage bags seal leaks on clean, smooth and slightly curved surfaces in seconds. Without the need for tension belts! Avoiding time-consuming preparatory measures, they allow you to take immediate action in an emergency. The intelligent bag attaches itself to the liquid or gas leak area by creating negative pressure and utterly seals the leak. The round Vetter vacuum leak drainage bags are designed for optimum flow and they drain dangerous liquids safely and quickly.