Hydraulic Seal Kits Repair for Komatsu Front-end Loader
Engineered for Komatsu wheel loaders, this seal kit offers complete hydraulic sealing solutions for lift, tilt, and steering cylinders. Built with advanced polymers and elastomers, it ensures leak-free performance, longer service intervals, and reliable operation under extreme working 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.
Hydraulic cylinders are central to the power and precision of Komatsu wheel loaders, driving critical functions such as lifting heavy loads, tilting the bucket, and steering in challenging terrain. Over time, cylinder seals wear due to continuous pressure cycles, exposure to contaminants, and extreme temperatures. The Komatsu Wheel Loader Seal Kit provides a dependable solution to restore your loader’s hydraulic efficiency, offering both performance reliability and cost savings compared to full component replacement.
Advanced Seal Composition
Each Komatsu seal kit is developed with a combination of premium sealing elements, carefully selected to withstand the harshest job site environments:
- Dust Seals – Protect cylinders from soil, grit, and abrasive particles.
- Rod & Piston Seals – Maintain hydraulic pressure for smooth, efficient movement.
- Wear Rings – Prevent direct metal-to-metal contact, reducing friction and extending cylinder life.
- Back-Up Rings – Reinforce seals under extreme loads, preventing extrusion.
The use of modern compounds such as polyurethane, high-grade NBR rubber, and PTFE ensures excellent resistance to oil, heat, and mechanical stress.
Manufacturing Process of Seal Kits
Every Komatsu seal kit undergoes a strict production process and testing phase to guarantee long-term reliability:
Precision Material Weighing
Each raw material, including polyurethane, PTFE, and rubber compounds, is accurately weighed according to strict formulation standards. This ensures consistent chemical properties, balanced elasticity, and reliable performance across every seal.
Mold Preparation & Material Placement
High-precision molds are thoroughly cleaned and preheated before material placement. The prepared compound is carefully filled into the mold cavities to avoid defects such as bubbles or uneven density, ensuring flawless shaping of the seals.
High-Pressure Compression Molding
Using advanced compression molding machines, the materials are subjected to high temperature and pressure. This process guarantees excellent dimensional accuracy, uniform density, and the proper hardness required to withstand hydraulic pressure and harsh jobsite conditions.
Rigorous Quality Inspection
Every finished seal undergoes strict inspection procedures, including dimensional checks, surface finish evaluation, and sealing performance tests. Only seals that meet international OEM standards are packaged and delivered, ensuring reliable operation for your machine.
This meticulous process ensures that every seal kit meets or exceeds OEM standards.
Material & Manufacturing Quality
Our Komatsu seal kits are produced with advanced sealing technology and top-grade materials to withstand heavy-duty operations:
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
This blend of materials ensures the seals maintain elasticity, toughness, and leak-proof performance, even when exposed to challenging job site conditions.
Why Choose Komatsu Seal Kits?
- Tailor-Made for Komatsu Loaders – Designed to meet OEM specifications for flawless installation.
- Leak Protection – Keeps hydraulic fluid sealed in, reducing downtime and maintenance costs.
- Durability in Harsh Conditions – Reliable sealing even in construction sites, mines, and quarries.
- Cost-Efficient Repair – Enables operators to rebuild cylinders instead of replacing them entirely.
- Performance Stability – Maintains consistent pressure, enhancing overall machine productivity.
Production & Quality Control
To meet Komatsu’s rigorous standards, every seal kit undergoes a controlled production and inspection process:
- Precision Material Weighing – Ensuring exact material proportions for optimal sealing performance.
- Mold Preparation & Material Placement – Creating accurate seal dimensions.
- High-Pressure Compression Molding – Achieving uniform strength and elasticity.
- Rigorous Quality Inspection – Testing seals for oil resistance, pressure tolerance, and dimensional accuracy.
These steps ensure every seal kit performs consistently in real working environments.
Compatible Komatsu Loader Models
This seal kit range covers multiple Komatsu wheel loader models and cylinder applications:
- Komatsu WA100, WA120, WA150, WA200, WA250
- Komatsu WA320, WA350, WA380, WA420, WA470
- Komatsu WA500, WA600, WA700 series
Our kits are designed for lift cylinders, tilt cylinders, and steering cylinders, ensuring reliable performance across different machine types.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| 707-99-14200 | 707-99-15810 | 707-99-35320 | 707-99-37500 | 707-99-41100 | 707-99-43110 | 707-99-43520 | 707-99-48620 |
| 707-99-48630 | 707-99-56620 | ||||||
Maintenance Recommendations
To maximize the service life of your Komatsu wheel loader hydraulic seals:
- Regularly inspect cylinders for scratches, dents, or corrosion.
- Keep hydraulic oil clean and free from contamination.
- Replace seals at scheduled intervals or at the first sign of leakage.
Always use cross reference seals when matching part numbers to ensure correct installation.
The Komatsu Wheel Loader Seal Kit is a trusted solution for operators who demand performance, reliability, and cost efficiency. By preventing leaks, reducing downtime, and extending component life, these kits ensure that Komatsu loaders deliver peak productivity across construction, mining, and industrial applications.
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.
