The Custom Hoists 4-Stage Single acting Hydraulic Telescopic Cylinder is designed with a pre-loaded v-packing that provides exceptional sealing performance, preventing fluid leakage and maintaining high-pressure levels. The cylinder also has a self-adjusting wave spring energizer, which helps to maintain the correct sealing force and ensures a long service lifeapplications. This hydraulic cylinder has four stages. It can extend up to four times its retracted length, providing a wide range of stroke lengths. It is a single-acting hydraulic cylinder that extends under hydraulic pressure and retracts under its weight or an external force. The energized Z seal package is also available as an option, providing increased sealing performance. FleetPride is your First Click in Heavy Duty®.