Seal Kit for Bobcat Hydraulic Cylinders Each Hydraulic Cylinder Seal Kits contains all the seals rebuild your cylinder. 6504959 Bobcat Skid Steer Tilt Cylinder Seal Kit that fits the following Machines: 520, 530, 533, 540, 543, Cylinder: 6553162 Rod: 1 1/4", Bore: 2" Hydraulic Seal Kit - assembled with high quality, aftermarket parts that make up a complete hydraulic seal kit.