Office Chair Hydraulic Gas Lift Cylinder – Universal Replacement (245 mm)

Replace a sinking or broken office chair cylinder with this heavy-duty hydraulic gas lift. It fits most standard office, computer and revolving chairs with a universal taper, and brings back smooth height adjustment in minutes.

Features

• Smooth, controlled up-and-down seat height adjustment
• Universal taper fit for most office and revolving chairs
• Black steel body with chrome-plated piston for long life
• Easy fitting: pull out the old cylinder, push in the new one

Dimensions

• Total height: 245 mm
• Body height: 185 mm
• Piston length (exposed): 60 mm
• Body diameter: 50 mm
• Piston diameter: 28 mm
• Base taper diameter: 45 mm

Before ordering: measure your existing cylinder and match the body diameter and total height.

Frequently Asked Questions

How do I know my chair needs a new gas lift?
If the seat slowly sinks, will not stay up, or will not go up at all, the gas lift cylinder is worn out and needs replacing.

Will this gas lift fit my chair?
It fits most office, computer and revolving chairs with a standard taper. Measure your old cylinder: this one has a 50 mm body and a total height of 245 mm.

How do I fit it?
Turn the chair over, pull the old cylinder out of the base, push the new cylinder into the base, place the seat on top and sit down once to lock it in place.

Is the chair base included?
No. The gas lift is sold on its own. A 5-star base is available separately.

Also need a new base or seat plate? See the 5-star chair base and the tilt mechanism plate, or browse all office chair spare parts.

Sold by The Royal Safe Company — office furniture maker since 1934.

• Feet flat on the floor, knees at about 90° — check the seat height against your desk.
• A mesh back keeps you cooler through long working days.
• Use tilt-and-lock to recline on calls and sit upright to focus.
• Armrests should let your shoulders stay relaxed.