Excavator Parts Supplier Boom Hydraulic Repair Seal Kit for JCB
Durable and precision-engineered hydraulic seal kits designed for JCB excavators. Optimized sealing performance ensures reduced downtime, longer service intervals, and reliable protection in demanding operations.
| 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.
The JCB Excavator Hydraulic Seal Kit is engineered to maintain the efficiency and durability of your machine’s hydraulic system. Designed specifically for JCB models, each seal kit includes all critical sealing elements required for boom cylinders, arm cylinders, bucket cylinders, and other hydraulic components. Whether your machine is operating in construction, mining, or agricultural environments, our seal kits help reduce leakage, extend service life, and minimize unexpected maintenance costs.
Material and Technology
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
Each JCB hydraulic seal kit typically includes:
Rod Seals: Prevent hydraulic oil leakage along the piston rod.
Piston Seals: Provide internal sealing between cylinder chambers.
Dust/Wiper Seals: Keep out dust, sand, and water.
Wear Rings & Guide Rings: Reduce metal-to-metal contact and extend cylinder life.
O-Rings & Backup Rings: Reinforce sealing and provide secondary protection.
Every kit is carefully matched to withstand JCB’s hydraulic pressures and maintain flexibility across temperature variations.
Compatibility and OEM Fitment
Our seal kits are compatible with a wide range of JCB excavator models, including but not limited to:
- JCB JS130, JS200, JS220, JS240, JS330
- JCB 3CX / 4CX Backhoe Loaders (hydraulic cylinder seals available)
- Other popular models used in construction and quarrying operations
OEM reference numbers available on request. Custom seal kits can also be produced based on part drawings or sample seals.
| 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 Testing & Assurance
Each JCB excavator hydraulic seal kit undergoes:
- Dimensional accuracy testing
- Pressure resistance verification
- Oil & temperature resistance checks
- Packing inspection for export readiness
This ensures every kit you receive meets OEM-level quality and reliability.
Application Scenarios
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
Key Advantages of JCB Seal Kits
- Model-Specific Fitment – Precision-manufactured to match JCB’s hydraulic cylinder dimensions.
- Leakage Prevention – Advanced sealing profiles reduce oil loss and contamination risks.
- Extended Service Life – Wear-resistant materials ensure longer replacement cycles.
- Cost-Effective Maintenance – Bundled complete kits eliminate the need to source seals individually.
- Adaptability – Suitable for both standard excavators and heavy-duty JCB applications like JS series.
Maintenance Tips for JCB Seal Kits
- Regularly inspect hydraulic oil condition and replace when contaminated.
- Ensure proper cylinder rod surface finish to avoid seal wear.
- Store seal kits in a dry, cool place away from sunlight before installation.
- Replace complete kits instead of single seals to guarantee balanced performance.
Contact Us
Our technical team can provide OEM cross-references, customized solutions, and full support for your fleet maintenance.
Get in touch today to request a quote or confirm compatibility with your JCB machine.
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.
