Replacement Seal Kit Cross Reference fit Komatsu Hydraulic Breakers
Durable Komatsu Hydraulic Breaker Seal Kit designed to deliver superior sealing performance, reliable protection of internal components, and long service life. Each kit is precisely engineered for Komatsu breakers, ensuring proper fit, easy installation, and uninterrupted productivity across a wide range of 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 breakers operate under extreme pressure and impact, and seals are the first line of defense to keep the system running smoothly. The Komatsu Hydraulic Breaker Seal Kit is designed to:
- Retain hydraulic oil under high pressure,
- Prevent dust, moisture, and debris intrusion,
- Reduce internal wear on pistons, cylinders, and bushings,
- Maintain consistent power output.
Using a reliable seal kit is not only about preventing leaks—it is about ensuring stable performance and minimizing costly downtime.
Quality Manufacturing Process
Every Komatsu Hydraulic Breaker Seal Kit goes through a strict production process to guarantee 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.
By following these steps, we ensure that each kit matches OEM specifications and provides long-term reliability.
OEM Compatibility and Cross Reference Seals
Our Komatsu seal kits are available for a wide range of models, from compact JTHB breakers to large quarry and mining hammers. Each kit includes all necessary seals to complete a full replacement.
We also offer cross reference seals support, which allows you to match existing OEM part numbers or breaker references to the right kit quickly. This helps distributors, repair shops, and end users save time and avoid costly errors in part selection.
| model Numbers | |||||||
|---|---|---|---|---|---|---|---|
| JTHB20 | JTHB30 | JTHB40 | JTHB50 | JTHB60 | JTHB65 | JTHB70 | JTHB150 |
| JTHB210-3 | JTHB230 | JTHB310 | JTHB400 | JTHB650-1 | Â | Â | Â |
Applications
Komatsu breakers are used in diverse industries, and our seal kits ensure reliability in every job:
- Urban Demolition: Maintains efficiency during continuous hammering on reinforced concrete.
- Heavy Mining: Seals resist abrasive particles and high mechanical stress.
- Pipeline & Road Construction: Ensures long duty cycles without hydraulic loss.
- Harsh Weather Conditions: Materials remain flexible in both hot and cold environments.
Seal Placement
Seals are strategically installed in piston, cylinder, valve, and tie rod areas of breakers. They work together to:
- Prevents leakage of hydraulic oil under high pressure.
- Protecting internal components from dust, water, and abrasive particles.
- Provides smooth piston and connecting rod movement and consistent impact force.
- Reduces wear on metal components by maintaining proper lubrication.
Seals are strategically placed in the piston, cylinder, tie rods, and valve areas, ensuring full hydraulic protection and preventing premature wear of critical components.
Material Overview for Seal Kits
Our Komatsu seal kits are produced with specialized compounds that meet the high demands of modern construction and mining:
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 material selection ensures seals remain effective even under constant hammering and exposure to harsh site conditions.
Maintenance Recommendations
To extend the life of your breaker and seals:
- Replace seal kits during scheduled maintenance intervals, not just after failure.
- Inspect piston and cylinder conditions to prevent premature seal wear.
- Always use clean, high-quality hydraulic oil compatible with Komatsu breakers.
- Keep spare seal kits stored in sealed packaging to protect from humidity and dust.
Why Choose Our Konan Seal Kit?
- OEM-matched quality and dimensions for reliable installation.
- Enhanced durability under continuous heavy-duty operation.
- Comprehensive seal sets for a complete maintenance solution.
- Cross reference seals availability for accurate and fast part identification.
- Global supply readiness with professional technical support.
Contact Us
Looking for a dependable Komatsu Hydraulic Breaker Seal Kit supplier? We provide OEM reference support, customized packaging, and bulk supply solutions to meet your business or maintenance needs.
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.
