Store cylinders indoors in a clean, dry area

Corrosion, contamination and seal deterioration can affect a cylinder before it returns to work. Storage preparation matters whether a cylinder is held as a spare or removed from equipment between projects.

Keep cylinders indoors in a clean, dry area, away from direct sunlight and large temperature changes. Protecting exposed surfaces and limiting condensation helps control the moisture that can lead to corrosion.

Rows of crated hydraulic cylinders on a clean green floor in a large indoor warehouse.
Finished cylinders stored indoors at Ariya Quanzhou.

Retract the rod and support the cylinder

Retract the rod fully for storage so that as little chrome surface as possible remains exposed. Use a purpose-made rack and restraints appropriate to the cylinder, keeping the assembly secure against tipping or movement.

If horizontal storage is necessary, support the cylinder along its length and restrain it against movement. Large, heavy cylinders need particular attention because prolonged loading on one side can affect wear rings and seals. Agree the orientation and handling method for the specific cylinder before placing it in storage.

Cylinder rods wrapped in plastic film, held horizontally on wheeled support frames in a workshop.
Rods supported on purpose-made frames and wrapped against dust, Ariya Quanzhou.

Seal the ports and protect against corrosion

Leave a light protective residue of hydraulic oil on internal surfaces, and avoid trapping moisture inside the cylinder, where it can contribute to corrosion of the tube and internal components.

Close the oil ports promptly after preparation, using suitable plugs and gaskets to keep moisture and contamination out. Protect exposed steel, such as eyes, clevises, bushes and bearings, with an appropriate anti-rust oil or grease.

Cover any exposed chrome with anti-corrosion protection. Damage to the rod surface can affect the seals when the cylinder returns to service.

A technician in an Akaliko shirt and hard hat applies anti-rust grease to the head of a hydraulic cylinder, with a long cylinder on stands behind.
Application of anti-rust grease.

If cylinders must be stored outdoors

Corrosion-inhibiting packaging can provide additional protection when a cylinder must be stored outdoors. The storage arrangement still needs to account for moisture, contamination, sunlight and temperature changes.

Packaging is one part of the preparation. The cylinder also needs suitable support, restraint, closed ports and protection for exposed metal.

A worker in a blue helmet wraps a finished orange cylinder in plastic film.
Wrapping a finished cylinder in film before it is crated, Ariya Quanzhou.

Oil-filled storage: heat and pressure risks

Filling a cylinder with oil is a separate storage decision that depends on the equipment and expected storage period. Oil expands when heated; in a closed cylinder, that expansion can raise internal pressure and create a hazard when a port is opened.

Discuss the method for the specific cylinder with a technical team before choosing oil-filled storage. Keep oil-filled cylinders away from heat and plan their handling around the possibility of retained pressure.