Digger Parts Hydraulic Cylinder Rebuild Seal Kits fit John Deere Excavator
The John Deere Digger Hydraulic Seal Kit is specially engineered to deliver superior sealing performance for John Deere excavator cylinders. Built with premium materials and strict quality standards, it ensures leak-free operation, extended cylinder life, and stable performance in demanding construction, mining, and agricultural applications.
| 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 |
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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 systems are at the heart of every John Deere digger’s performance, and the hydraulic cylinders rely heavily on seal integrity. This hydraulic seal kit is designed to match the OEM specifications of John Deere models, providing a precise fit and reliable sealing under extreme operating conditions. Whether your digger is working in muddy terrain, rocky ground, or heavy lifting jobs, these seal kits prevent fluid leakage and ensure consistent hydraulic pressure.
Manufacturing Process & Quality Control
Each seal kit undergoes a controlled manufacturing 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.
Compatibility & OEM Fitment
This hydraulic seal kit is tailored for John Deere digger cylinders, including:
- Boom cylinder seal kits
- Arm cylinder seal kits
- Bucket cylinder seal kits
- It ensures a perfect fit for common John Deere models such as 50D, 120D, 200D, 210G, and more.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| 4485612 | 4634034 | 4639939 | 4640107 | 4640118 | 4649751 | 4649752 | 4652138 |
| AH148785 | AH173457 | AH225135 | AH225136 | AH225137 | AT264439 | FYA00001398 | FYA00006596 |
| FYA00006597 | TH109366 | ||||||
If you have a specific OEM part number or cylinder code, our team can cross-check and provide the correct replacement kit.
Key Advantages
- Leak-proof sealing for high-pressure hydraulic systems.
- Extended cylinder lifespan by reducing internal wear and damage.
- Temperature & chemical resistance, suitable for diverse jobsite conditions.
- OEM-level fitment with easy installation and replacement.
- Cost-efficient maintenance, reducing downtime and repair expenses.
Maintenance Tips
- Regularly inspect hydraulic oil condition and replace when contaminated.
- Keep cylinder rods clean to prevent dirt from damaging seals.
- Replace seals at the first sign of oil seepage to avoid bigger failures.
- Store unused seal kits in a dry, cool place away from direct sunlight.
Material Overview for Seal Kits
Our John Deere hydraulic seal 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
The materials are tested for resistance against hydraulic oils, grease, and external contaminants, ensuring long service life.
Application Scenarios
This seal kit is widely used in:
- Construction projects – earthmoving, digging, grading.
- Agricultural work – land clearing, trenching, loading.
- Mining & quarrying – heavy-duty rock handling and excavation.
- Forestry & material handling – reliable operation in dusty, abrasive environments.
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.
