332/E8224 Hydraulic Cylinder Seal Kits 332-E8224 332E8224 for JCB 3C 4C 3CX 4CX Excavator Backhoe Loader Repair
332-E8224 Hydraulic Cylinder Seal Kit for JCB 3C/4C/3CX/4CX Backhoe Loaders – OEM-Compliant Excavator Repair
Product Overview
The 332-E8224 Seal Kit is an authorized repair solution designed for the hydraulic cylinders of JCB 3C, 4C, 3CX, and 4CX backhoe loaders and excavators. This kit restores factory sealing performance for boom, arm, and bucket cylinders, ensuring leak-free operation in excavation, trenching, and material handling applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Compatible Models | JCB 3C, 4C, 3CX, 4CX (Serial Numbers: JCB/3C/XXXX and later) |
| Application | Hydraulic Cylinder Piston Seals, Rod Seals, Dust Wipers |
| Pressure Range | 0–22 MPa (3,190 PSI) – Matches JCB hydraulic system standards |
| Temperature Tolerance | -30°C to +110°C (-22°F to +230°F) |
| Primary Seal Material | Hydrogenated Nitrile (HNBR) – Resists oil degradation and wear |
| Secondary Seals | Fluorocarbon (FKM) Wiper Seals, PTFE Wear Rings, NBR O-Rings |
| Certifications | ISO 6194 (Rotary Shaft Seals), JCB TCH-047 Compliance |
Kit Components & Functions
| Component | Function |
|---|---|
| 1. Piston Seal (HNBR) | Dual-acting U-cup design maintains hydraulic pressure during dynamic loads. |
| 2. Rod Seal (FKM) | Step-lip configuration prevents oil leakage along the cylinder rod. |
| 3. Dust Wiper (NBR) | Removes abrasive debris during rod retraction (ISO 10100 compliant). |
| 4. Wear Ring (PTFE) | Glass-reinforced PTFE reduces friction between piston and cylinder barrel. |
| 5. Buffer Seal (FKM) | Secondary seal absorbs pressure spikes in high-cycle operations. |
| 6. O-Rings (HNBR) | High-pressure static seals for hydraulic port connections (SAE J1926). |
| 7. Backup Ring (PU) | Reinforces rod seal against extrusion under side loads. |
Key Features & Benefits
✅ OEM Interchangeability: Direct replacement for JCB part numbers JCB/SEAL/332E and JCB/SEAL/8224.
✅ Extended Durability: HNBR seals withstand over 400,000 cycles in heavy-duty trenching.
✅ Contamination Control: Multi-layer wiper design meets ISO 4406 cleanliness standards.
✅ Cost Efficiency: Reduces downtime by 35% compared to non-OEM alternatives.
✅ Global Compliance: Adheres to EU Machinery Directive 2006/42/EC and RoHS 2011/65/EU.
