Chair Gas Cylinder
Chair Gas Cylinders

An office chair gas cylinder is a crucial component of an office chair. It is responsible for adjusting the height of the chair and allowing for smooth, fluid movement.

The gas cylinder is a sealed tube filled with compressed gas that sits inside the base of the chair. When the lever or button is activated, the chair gas cylinder releases the compressed gas. This allows the chair to raise or lower.

Over time, the cylinder may begin to lose pressure or fail altogether. This can result in a chair that sinks unexpectedly or refuses to adjust height. In such cases, it is important to replace the gas cylinder to ensure the chair is safe and comfortable to use.

Once the old cylinder is removed, a new one can be installed in its place. It is important to ensure that the new cylinder is compatible with the mechanism and that it is installed securely. Once the new cylinder is in place, the base can be reattached, and the chair can be flipped upright.

In addition to replacing the gas cylinder when it fails, it is also important to periodically check the cylinder’s pressure to ensure it is functioning correctly. This can be done by pressing down on the chair while seated and noting whether it slowly sinks or remains at the desired height.

When it fails, it should be replaced promptly to ensure the safety and comfort of the user. Replacing the gas cylinder is a relatively simple process that can be done with basic tools. It is also important to periodically check the cylinder’s pressure to ensure it is functioning correctly.

Office chair gas cylinder are typically filled with nitrogen.

Office chair gas cylinder assembly consists of the following parts.

Outer Cylinder: This is the main visible part of the gas cylinder, usually made of steel or aluminum. It houses all the internal components and provides structural support. It also fits into the office chair base.

Gas Chamber: On the inside of the outer cylinder, there’s a sealed chamber filled with compressed gas, usually nitrogen. This gas is what allows the chair to adjust its height when activated via the chair mechanism.

Piston: The piston is a movable component inside the gas chamber. When pressure is applied, typically by sitting on the chair or pulling a lever, the piston moves, either compressing or decompressing the gas.

Rod: Connected to the piston, the rod extends outside of the gas cylinder and is attached to the chair mechanism. When the piston moves, it adjusts the height of the chair according to the operators preferred height.

Seals and O-rings: These are essential for maintaining the integrity of the gas chamber, preventing leaks and ensuring smooth operation of the piston.

Valve: There is also a valve mechanism to control the flow of gas in and out of the chamber, typically activated by a lever or button via the mechanism.

These components work together to provide the height adjustment functionality in an office chair, allowing users to customize the chair’s height for comfort and ergonomic support.

If you need to replace your own office chair gas cylinder, you can read our sinking office chair guide to help you do it correctly.