EXT pumps are designed to provide a long service life in ponds and large water features. A properly operating pump requires a proper seal to prevent components from being damaged. Mechanical seals can be damaged through improper use, such as failed startup, running dry, and incompatible head pressures. If a mechanical seal is damaged, the Aquascape EXT Pump Mechanical Seal and O-Ring Kit provides everything needed for a seamless replacement. The kit includes mechanical seals, gasket sealant, impeller washer gasket, impeller eye cap O-ring, bracket O-ring, lens wipes, and a grease packet.