Part number: 991/00103
Rod diameter: 50 mm
Cylinder diameter: 90 mm
The hydraulic cylinder seal kit maintains proper oil pressure within the cylinder, ensuring precise and powerful arm movements. Proper sealing is critical for machine performance and operational safety.
Function & Wear Symptoms
Worn or damaged seals may cause:
Regular inspection and replacement of seals helps maintain full cylinder efficiency and prevents major hydraulic failures.
| Brand (Machine Type) | Example Ram Application |
|---|---|
| JCB (Backhoe Loaders) | Bucket tilt ram, Extradig ram on 3CX, 4CX, 5CX |
| JCB (Mini Excavators) | 8052, 8055, 8065 |
| JCB (Telehandlers) | Lift and tilt rams on 526, 527, 532, 535, 537, 540, 550 |
| JCB (Wheel Loaders) | 411, 412, 416, 446, 456 |
The list above is for reference. Before purchasing, we recommend verifying the dimensions (rod and cylinder diameter) on your machine.
Data sheet
Specific References
Manufacturer
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The hydraulic cylinder seal kit maintains proper oil pressure within the cylinder, ensuring precise and powerful arm movements. Proper sealing is critical for machine performance and operational safety.

















