Note:Hydraulic Log splitter cylinder rebuild seal kit for 4.0"Bore x 1.75" rod cylinder
To 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.) 4.0" x rod (O.D) 1.75". Please note some cylinder rod head OD size is not rod size.
2. Wear rings. Piston wear ring : 101.6 mm ( OD 4") x 95.25mm (ID 3.75") x 9.53mm (0.375" wide), Nylon Rod wear ring : 44.5mm (ID 1.752") x 50.8mm (OD 2”) x 9.53mm (0.375" wide), Nylon
3. Piston seals 1 square ring and 1 O-ring. Piston Square ring: D101.6 mm x91.6mm x 3.28mm; O-ring (installed under the square ring): 91.0 mm x 2.65 mm . CPU + NBR
4. 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, TPU

Below is 4.0"Bore x 1.75" rod cylinder Specification of this seal kit: Retracted (center to center between rod mountain hole and clevis hole: 32.4” Extended (center to center same as above): 56.4”
Stroke: 24±0.05”
Dimension from center of clevis hole to back face of cylinder: 2.95” Dimension from center of rod end hole to front face of rod: 1.06” Dimension from center of rod end hole to front face of cylinder: 1.18” Ports: 1/2" NPT Dimension from port to port: 25.4”
Rod: 1.75" rod
Rod end mountain hole: 0.55”
Clevis Mountain hole: 1.16”
Dimension between mountain clevis to clevis: 0.87”
Thickness of each mountain clevis: 0.375”
Length of each mounting clevis: 4.125”

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