Omnimed safety control seals with numbers have a brightly colored plastic body with a flexible locking piece which threads into the body. These seals are designed for a narrow slot opening. Each is imprinted with a unique tracking number and can be broken without tools. Seals can be used on cabinets where contents need to be controlled. They provide a clear visual signal and also serve as a deterrent to prevent unauthorized cabinet access. Seals are sold in 100 count packages and come in Red, Green or Yellow.