Hydraulic Cylinder Seal Kits Wholesale for Komatsu Backhoe Loader
Durable Komatsu Backhoe Loader Seal Kit designed for reliable sealing, long service life, and superior protection of hydraulic cylinders. Engineered for perfect OEM replacement across a wide range of Komatsu backhoe models, ensuring consistent performance in 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 |
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 Komatsu Backhoe Loader Seal Kit is a complete sealing solution for essential hydraulic components, including boom, dipper, bucket, stabilizer, and steering cylinders. Manufactured from high-quality materials such as polyurethane (PU), nitrile rubber (NBR), and PTFE, each kit is engineered to resist wear, deformation, and high-pressure conditions. By ensuring leak-free hydraulic operation, these seal kits help reduce downtime and extend the overall service life of backhoe loaders working in demanding environments.
Our Manufacturing Excellence
Komatsu backhoe loaders are known for heavy-duty performance, and their hydraulic systems demand seals that can withstand constant pressure fluctuations and exposure to dirt, water, and temperature variations.
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.
The Assurance of Quality Materials
Every seal kit is made using carefully selected compounds engineered for durability and flexibility.
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
These materials work together to deliver a balance of sealing reliability, long service life, and cost efficiency.
OEM Compatibility & Replacement
This seal kit is designed as a direct OEM replacement for multiple Komatsu backhoe loader models, ensuring easy installation and reliable fit. Commonly compatible with:
- Komatsu WB91R, Komatsu WB93R, Komatsu WB93S, Komatsu WB97R, Komatsu WB97S
- Other WB series models (please contact us for cross reference seals and specific part numbers).
Each kit is available with OEM reference numbers, making it easier for operators and dealers to source the exact replacement they need.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| 3E3297 | 3E3299 | 7X2737 | 7X2783 | 7X2812 | 7X2825 | 8T3593 | 9X2020 |
| 1113300 | 1113302 | 1328816 | 1429192 | 1429193 | 1539053 | 1787189 | 1857674 |
| 1864327 | 1864404 | 2063805 | 2152023 | 2285273 | 2297194 | 2309357 | 2332622 |
| 2332623 | 2342593 | 2342595 | 2350354 | 2350972 | 2384462 | 2409538 | 2410110 |
| 2418924 | 2422553 | 2435805 | 2465926 | 2600273 | 2617175 | 3240397 | 3387039 |
| 3387156 | 3769015 | 3779352 | 3809470 | 3812732 | 3975704 | 4368721 | 4373547 |
| 5016704 | 5212972 | Â | Â | Â | Â | Â | Â |
Application & Working Environments
The Komatsu Backhoe Loader Seal Kit is ideal for machines used in:
- Construction projects – foundation digging, trenching, and site preparation.
- Agricultural operations – soil excavation, irrigation works, and material handling.
- Road maintenance – ditching, grading, and utility repair tasks.
- Mining & quarrying – loading, compacting, and light-duty excavation in rocky terrain.
Regardless of the application, these seal kits deliver consistent sealing performance and safeguard the hydraulic system against costly failures.
Quality Control & Testing
Every seal kit undergoes rigorous inspection before packaging:
- Dimensional accuracy checks to ensure proper fitment.
- Hydraulic pressure testing to verify sealing integrity.
- Material hardness & flexibility tests for durability.
- Packaging quality inspection to guarantee safe delivery.
Our strict quality control ensures each kit matches or exceeds OEM standards.
Why Choose Our Komatsu Backhoe Loader Seal Kits?
- 100% OEM replacement fit for Komatsu backhoe loaders
- High-performance materials suitable for all climates
- Reduced downtime and maintenance costs
- Extended hydraulic cylinder life and efficiency
- Competitive pricing with 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.
