68499-91010 Hydraulic Cylinder Seal Kit Fits Kubota Excavator ModelsOne New Aftermarket Replacement Swing Hydraulic Cylinder Seal Kit Fits Kubota KH 191 Excavator This aftermarket replacement swing cylinder seal kit is designed to rebuild and reseal the swing cylinder on the Fits Kubota KH 191 mini excavator. The swing cylinder controls the upper structure rotation, and worn or damaged seals cause hydraulic fluid leaks and loss of swing force. This kit includes the seals needed to restore proper hydraulic pressure and