Parts Arm Bucket Hydraulic Seal Kit for JCB Excavator
Durable and precision-engineered JCB excavator hydraulic seal kit designed to protect cylinders, extend service life, and deliver reliable performance across tough working environments.
| Material | NBR/ PTFE/ ACM/ VMQ/ FKM/ HNBR/ EPDM/ Silicone and etc |
|---|---|
| MOQ | 5 Pieces |
| Pressure | Up to 690bar(10000psi) |
| Working Temperature | -40–120℃(according to the material) |
| Color | Black/Orange/Brown/White/Brown |
Quick Quote Request
Kinton Seals is trusted by professionals worldwide for providing high-quality seal kits for excavators, dozers, loaders, and other heavy machinery, ensuring reliable performance and long-lasting durability.
Hydraulic seal kits for JCB excavators play a critical role in maintaining the efficiency of the hydraulic system. These kits are specifically designed to prevent internal and external fluid leakage, ensuring consistent cylinder pressure and smooth machine operation. With advanced sealing profiles and superior wear resistance, our JCB seal kits provide long-lasting reliability even under heavy workloads.
Manufacturing Process
To guarantee quality and consistency, every seal kit undergoes a rigorous production and inspection process before delivery.
Highlights of the Process:
Precision Material Weighing
Each raw material block is carefully weighed with high-accuracy equipment before processing. This ensures that every seal ring starts with the exact material volume required for its specific size and application, preventing inconsistencies in density or performance.
Mold Preparation & Material Placement
After weighing, the prepared material is positioned onto the appropriate mold. Our workshop is equipped with a wide variety of molds to match different seal ring diameters and cross-sections. The correct mold selection guarantees precise shaping, while careful placement avoids defects such as uneven thickness.
High-Pressure Compression Molding
The molds are then set under specialized compression machines, where controlled pressure and temperature are applied. This process allows the material to be fully formed into a durable seal with consistent hardness and elasticity. Strict monitoring ensures every batch meets dimensional accuracy and structural integrity.
Rigorous Quality Inspection
Each batch of seals undergoes rigorous testing after molding. Technicians check for dimensional accuracy, surface smoothness, hardness, and sealing resilience. Any defective products are filtered out, ensuring that only seals with stable performance and long service life proceed to packaging.
Seal Kit Composition
Our JCB excavator seal kits are composed of multiple sealing elements that work together to ensure performance:
- Piston Seals – Maintain fluid separation between high- and low-pressure zones.
- Rod Seals – Prevent fluid leakage during piston rod movement.
- Dust Seals / Wipers – Protect cylinders from contaminants such as dust, mud, and water.
- O-Rings & Backup Rings – Ensure precise fitting and eliminate micro-leaks under pressure.
- Wear Rings – Reduce metal-to-metal contact and improve cylinder alignment.
This comprehensive structure ensures that JCB machines maintain peak hydraulic efficiency across diverse working conditions
Application Across JCB Models
Our hydraulic seal kits are engineered to fit a wide range of JCB excavator cylinders, including:
- Boom Cylinder Seal Kits
- Arm Cylinder Seal Kits
- Bucket Cylinder Seal Kits
Commonly compatible with models such as JCB JS130, JS220, 3CX, 4CX, and more. OEM replacement support is available for customers with part number references.
| MACHINERY MODEL NUMBER | ||||||||
|---|---|---|---|---|---|---|---|---|
| 331/39036 | 331/39041 | 331/39047 | 332/Y2186 | 332/Y3519 | 332/Y3543 | 332/Y5519 | 332/Y5599 | 332/Y6192 |
| 333/Y6023 | 332/Y6195 | 332/Y6440 | 332/Y6462 | 332/Y6519 | 332/Y6954 | 332/Y7633 | 333/Y10142 | 333/Y6024 |
| 333/Y8994 | 332-C7368 | 332-G9281 | 332-G9282 | 334-P0176 | 336-A0124 | 35-900808 | 550/41001 | 550/41002 |
| 550/41008 | 550/41747 | 550/42085 | 550/42098 | 550/42112 | 550/42126 | 550/42219 | 550/42243 | 550/42261 |
| 550/42835 | 550/42842 | 550/42847 | 550/42849 | 550/42854 | 550/42855 | 550/43774 | 550/90191 | 828/10371 |
| 991/00013 | 991/00014 | 991/00015 | 991/00016 | 991/00018 | 991/00025 | 991/00036 | 991/00052 | 991/00054 |
| 991/00058 | 991/00061 | 991/00069 | 991/00081 | 991/00095 | 991/00096 | 991/00097 | 991/00098 | 991/00099 |
| 991/00101 | 991/00102 | 991/00103 | 991/00105 | 991/00152 | 991/00156 | 991/00157 | 991/00158 | 991/00159 |
| 991/00167 | 991/10081 | 991/10129 | 991/10130 | 991/10142 | 991/10151 | 991/10152 | 991/10158 | 991/10820 |
| 991/20003 | 991/20009 | 991/20019 | 991/20021 | 991/20022 | 991/20023 | 991/20024 | 991/20025 | 991/20027 |
| 991/20030 | 991/20039 | 903-20190 | 903-20233 | 903-20265 | 903-20435 | 903/20839 | 903/20856 | 903/20862 |
| 903/21024 | 903-21049 | 903/21061 | 903/21071 | 903-21165 | 904/50020 | 904/20172 | 904/20281 | 904/50023 |
| 904/50033 | 904/50040 | 904/50047 | 904/50009 | 813/10061 | 813/40026 | 813/00426 | 813/00425 | 813/00427 |
| 998-10021 | 998-10022 | 998-10338 | 6900-0754 | 6900-0801 | LQU0082 | LQU0091 | LQU0142 | LQU0164 |
| 991/00107 | 991/00109 | 991/00110 | 991/00111 | 991/00115 | 991/00120 | 991/00121 | 991/00122 | 991/00123 |
| 991/00127 | 991/00130 | 991/00131 | 991/00142 | 991/00144 | 991/00145 | 991/00146 | 991/00147 | 991/00147P |
| LQU0166 | 25/624300 | 550/42383 | 991/00012 | 991/00055 | 991/00100 | 991/00163 | 991/20002 | 991/20029 |
| 903-20916 | 904/05100 | 998-10020 | LQU0165 | 991/00126 | 991/00148 | 332/Y6194 | 333/Y9235 | 550/41004 |
If you can't find the serial number you need, please contact us.
Quality Assurance
Every JCB seal kit undergoes multiple layers of inspection, including:
- Dimensional accuracy testing
- Material hardness and elasticity checks
- Pressure leak tests under simulated working loads
Only fully inspected kits are packed and shipped to ensure stable performance upon installation.
Application Across JCB Models
JCB machines are widely used across roadworks, quarrying, demolition, and material handling. Our hydraulic seal kits provide long-term performance stability in:
- Wet and muddy job sites
- Heavy lifting and loading cycles
- Harsh temperature variations
- Continuous excavation and material transfer
Material Overview for Seal Kits
JCB equipment often works in challenging conditions such as mud, abrasive soil, and heavy load lifting, making sealing performance critical. Our kits are manufactured using:
Nitrile Rubber Buna(NBR, BUNA-N)
Temperature Range:-30 to 125 ℃
Hardness:60-90 Shore A
Color: Black
Use: Oil & Water Resistance Situation Advantage: Excellent oil resistance, performance and stability, widely used, cheaper
Fluororubber(FKM,FPM)
Temperature Range:-20 to 250℃
Hardness:70-90 Shore A
Color: Black/Brown/Green
Use: Oil & Chemical Resistance Situation
Advantage: Wear resistance, acid and alkali resistance, high temperature resistance situation
Silicone (VMQ )
Temperature Range: -60 to 225 ℃
Hardness: 50-70 Shore A
Color: Red/Black/Blue/White/Transparent, etc
Use: Heat& Food Situation(FDA, RoHS Approved)
Advantage: Good heat resistance, cold resistance, lubrication oil resistance, water resistance safety & reliable to human body
Ethylene Propylene Rubber(EPDM, EPM)
Temperature Range:-50 to 150 ℃
Hardness: 60-90 Shore A
Color: Black
Use: Ozone, water vapor situation
Advantage: Excellent oxidation resistance ozone resistance and erosion resistance
Perfluoroelastomer(FFKM, FFPM)
Temperature Range: -42 to 327 ℃
Hardness:60-95 Shore A
Color: Black / White
Advantage: Long-term, proven performance, can mean less frequent seal changes, repairs and inspections, increasing process and equipment uptime in productivity and yield.
Neoprene Rubber(CR )
Temperature Range:-30 to 125 ℃
Hardness:60-90 Shore A
Color: Black
Use: Oil & Water Resistance Situation Advantage: Excellent oil resistance, performance and stability, widely used, cheaper
Why Choose Our JCB Seal Kits?
- OEM-compatible design for precise fitment.
- Extended service life, reducing downtime and maintenance costs.
- Enhanced sealing reliability in construction, roadwork, quarrying, and agriculture.
- Customizable options for unique working conditions.
Maintenance Recommendations
- Keep cylinders clean during replacement to avoid contaminant damage.
- Always replace seals as a complete set rather than mixing old and new parts.
- Regularly inspect wiper seals for early signs of wear.
- Use hydraulic oil recommended by JCB to maximize seal life.
Packaging & Delivery
All seal kits are packed in moisture-proof, anti-static packaging, clearly labeled for model identification. Export-standard cartons and pallets are available for bulk orders.
At Kinton Seals, we understand that reliable delivery is just as important as product quality. Our goal is to ensure that every order of Seal Kits for excavators, bulldozers, wheel loaders, and other heavy machinery reaches our customers safely, on time, and in perfect condition.
Packaging & Protection
- Standard Export Packaging – Each seal kit is carefully packed in moisture-proof and dust-proof bags, ensuring seals remain clean and undamaged during storage and transportation.
- Layered Protection – Kits are placed in sturdy cartons, and for bulk shipments, cartons are further reinforced with pallets and stretch film to minimize impact during handling and transit.
- Customization Options – We provide OEM/ODM packaging services, including branded boxes, barcodes, and special instructions, helping partners strengthen their brand presence in local markets.
- Extra Protection – For bulk shipments, cartons and pallets are reinforced to reduce the risk of damage in transit.
Order Processing & Lead Time
- Standard Seal Kits – For large quantity orders, lead time is usually 7–10 working days, as each kit requires precise matching of every seal, followed by labeling and packaging.
- Custom Seal Kits – For tailored requirements or non-standard models, production and assembly typically take 15–30 days, especially if new tooling or mold development is required.
- Sample Orders – Small batch or sample kits can often be prepared faster, subject to stock availability.
Delivery Options
- Air Freight for urgent orders
- Sea Freight for bulk shipments
- Courier Express (DHL, FedEx, UPS) for small packages and samples
Quick Quote Request
Kinton Seals is trusted by professionals worldwide for providing high-quality seal kits for excavators, dozers, loaders, and other heavy machinery, ensuring reliable performance and long-lasting durability.
