Jandy R0479400 – Mechanical SealThe Jandy R0479400 Pro Series Mechanical Seal is designed to prevent water leakage along the motor shaft, protecting your pump motor from damage and maintaining proper system operation. A worn seal can lead to drips, corrosion, and premature motor failure, making replacement an important part of pump maintenance. This genuine OEM Jandy replacement ensures proper fit and sealing performance within compatible Pro Series pump assemblies. Key Features