Check the listing for details. Replacement Bearing Repair Kit Parts For Office Chair Gas Spring Cylinder #S4451. Condition: New. Listed at 10.99 USD. Replacement Bearing Repair Kit Parts For Office Chair Gas Spring Cylinder #S4451-KThis listing is for a set of hardware needed to repair/replace worn-out parts in pneumatic gas lifts/cylinders commonly used on office chairs. The kit does not include the gas spring lift cartridge itself. This kit includes all the pieces needed to replace the hardware on your chair cylinder. Important: The order in which these parts are listed is the exact order in which they need to be placed on the piston, as pictured. Failure to place the parts in this exact order may result in damage and/or failure of the gas spring. The kit includes the following parts, which cannot be sold separately. 1 rubber spacer 1 hardened steel black washer 1 bearing 1 hardened steel black washerAt this point, you will need to place the gas lift assembly back into the housing until the piston end comes out of the support column. 1 flat thin washer 1 retaining clip