Feature:1. Perfect Fit for Hydraulic Cylinders: Designed to fit hydraulic cylinders with a bore of 4.5 inches and a rod diameter of 1.75 inches, ensuring a perfect match and efficient rebuilding.2. Durable Material: The hydraulic log splitter cylinder rebuild seal kit is constructed from high wear resistant rubber and plastic materials, guaranteeing durability and long term reliability.3. Reliable Quality: The seal kit providing trustworthy quality assurance, and ensures smooth operation of your equipment after rebuilding.4. Ideal for Hydraulic Log Splitter Rebuild: Suitable for rebuilding hydraulic log splitter cylinders, meeting your requirements for equipment maintenance and repair.5. Comprehensive Seal Kit: Comes with a variety of seals, allowing replacement of all crucial parts at once, offering convenience and time saving efficiency.Specification:Item Type: Hydraulic Log Splitter Cylinder Seal KitMaterial: Rubber, plastic.Fitment:Fits for 4.5in Bore X 1.75in Rod CylinderTo know whether it fits your cylinder, one good way is to disassemble and measure your cylinder to compare with each item specification. 1. Cylinder tube Bore (I.D.) 4.5in x rod (O.D) 1.75in. Please note: 4.5in bore size is not Cylinder tube O.D. Cylinder rod size is inside tube part size.2. Piston wear ring : 114.3 mm (OD 4.5in) x 107.95mm (ID 4.25in) x 9.53mm (0.375in wide), NylonRod wear ring : 44.5mm (ID 1.752in) x 50.8mm (OD 2in) x 9.53mm (0.375in wide), Nylon3. Piston seals1 square ring and 1 O-ring. Piston Square ring: 114.3 mm x104.3mm x 3.28mm; O-ring (installed under the square ring): 103mm x 2.65mm. CPU + NBR4. Rod O-ring (item 13): 44.5mm x 54mm x 5mm, CPU. There is O-ring inside.5. Rod dust ring (Item 12): 44.5mm x 54mm 5.5mm /7.3mm, TPUBelow is 4.5inBore x 1.75in rod cylinder Specification that OEM made by this seal kit:Retracted (center to center between rod mountain hole and clevis hole: 32.4inExtended (center to center same as above): 56.4inStroke: 240.05inDimension from center of clevis hole to back face of cylinder: 2.95inDimension from center of rod end hole to front face of rod: 1.06inDimension from center of rod end hole to front face of cylinder: 1.18inPorts: 1/2in NPTDimension from port to port: 25.4inRod: 1.75in rodRod end mountain hole: 0.55inClevis Mountain hole: 1.16inDimension between mountain clevis to clevis: 0.87inThickness of each mountain clevis: 0.375inLength of each mounting clevis: 4.125inPackage List:1 x Hydraulic Log Splitter Cylinder Seal Kit (10 Pcs)