The mechanical seal (shaft seal) for the Nautilus pump is a sliding seal that separates the wet part of the hydraulics from the motor compartment. A properly functioning seal prevents water from leaking along the pump shaft, thereby protecting the motor from moisture-related damage.
The seal is one of the most frequently replaced components of pool pumps; replacement is recommended whenever drops of water or traces of moisture appear under the pump. The genuine part for the Nautilus model guarantees the correct dimensions of the sliding surfaces and compatibility with the shaft material. During installation, the sliding surfaces of the seal are lightly moistened with water to prevent damage during the first start-up.
