The MARINE IMPELLER is made available by us in various types and sizes. It is suitable for being used in various commercial and industrial applications. The marine engines will have a raw water pump with a flexible impeller. It is used to pump raw water from outside the boat through the engine's raw water cooling plumbing. These impellers are very reliable but some care is required. They should never be run dry. It is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation. The offered MARINE IMPELLER is very durable and safe for use.