The Hydraulic Cylinder Seal Kits contain genuine Cat® seals, many of which feature proprietary materials and patented designs for superior compression set and broader temperature applications. All are matched to your application, helping to ensure top performance and long wear life. Cat® Hydraulic Cylinder Seal Kits provide all seals required for a complete reseal, so customers are provided with a quick solution during time sensitive repairs. This ensures maximum uptime and productivity.