Excavator Spare Parts Hydraulic Seal Kits for Doosan Daewoo
High-quality Doosan/Daewoo Excavator Hydraulic Seal Kit engineered for leak prevention, precise fit, and long-lasting durability. Designed for boom, arm, and bucket cylinders, ensuring stable and reliable hydraulic performance under heavy-duty conditions.
| 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.
The Doosan / Daewoo Excavator Hydraulic Seal Kit provides a complete sealing solution for hydraulic cylinders, ensuring smooth operation and preventing fluid leakage. By protecting the piston, rod, and cylinder chamber from wear and contamination, these seal kits extend the service life of hydraulic systems and keep your excavator operating at peak efficiency.
Hydraulic seals are vital components that directly affect digging power, lifting capacity, and overall machine performance. This kit includes all required seals for boom, arm, and bucket cylinders, making it an ideal choice for maintenance or full cylinder rebuilds.
Manufacturing Process
Before packaging into complete kits, every seal goes through strict quality-controlled steps to ensure reliability and durability. Each stage is designed to achieve OEM-level standards and long-term performance.
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.
OEM Compatibility & Fitment
This hydraulic seal kit is designed for a wide range of Doosan and Daewoo excavators, including:
- Doosan Models: DX55, DX60, DX140, DX225, DX300, DX350, DX420
- Daewoo Models: DH55, DH130, DH220, DH280, DH320, DH420
- Suitable for boom, arm, and bucket cylinder rebuilds
- OEM part references available upon request
The kit ensures a precise fit and offers the same quality as original manufacturer components.
| PART NUMBERS | |||||||
|---|---|---|---|---|---|---|---|
| 274-00004BKT | 440-00042BKT | 440-00044AKT | 2274-1014AKT | 2440-9144KT | 2440-9146KT | 2440-9236KT | 2440-9240KT |
| 2440-9241KT | 2440-9413KT | 2440-9441KT | 401107-00171A | 401107-00298A | 401107-01220A | DX225 | K9001007 |
| K9001008 | K9001009 | K9001878 | K9001892 | K9001901 | K9002066 | K9002067 | K9002068 |
| K9002289 | K9002290 | K9002306 | K9002307 | K9002308 | K9003934 | K9003935 | K9004402 |
| K9004899 | K9005434 | 440-00139 | 2480-1013KT | 2440-9234KT | 2440-9339KT | 2440-9090KT | Â |
| S225LC-V Arm cylinder seal kit | S225LC-V Boom cylinder seal kit | S225LC-V Bucket cylinder seal kit | Â | ||||
If you can't find the serial number you need, please contact us.
Quality Assurance
Each kit undergoes comprehensive testing to confirm:
- Reliable leak-free operation under high-pressure conditions
- Long-lasting durability in demanding environments
- Accurate fitment to reduce downtime and installation errors
Strict quality checks ensure every kit meets or exceeds OEM performance requirements.
Maintenance Recommendations
To keep your hydraulic cylinders in peak condition:
- Inspect seals regularly for wear or fluid leakage
- Replace seals during scheduled maintenance or when rebuilding cylinders
- Always use recommended hydraulic fluids and maintain proper system pressure
- Prevent contamination by keeping cylinders clean and protected
Material Overview for Seal Kits
Each seal kit is composed of selected elastomers and polymers, chosen for their performance under different working environments:
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
Application Scenarios
- Heavy construction and excavation projects requiring continuous hydraulic performance
- Quarrying, mining, and earthmoving operations with high cylinder demands
- Equipment maintenance workshops performing cylinder rebuilds for Doosan and Daewoo excavators
Contact & Ordering
For more details or to place an order, contact our sales team with your excavator model and cylinder type. We provide expert guidance to ensure correct kit selection, fast delivery, and reliable after-sales support.
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.
