Seal Kit for Caterpillar Hydraulic Breaker
The Caterpillar Hydraulic Breaker Seal Kit is designed to ensure long-lasting sealing performance under extreme working conditions such as heavy demolition, quarrying, and mining. By preventing oil leakage and protecting the breaker’s core components from contamination, this seal kit helps operators achieve stable performance, reduced downtime, and extended equipment lifespan.
| 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.
A Hydraulic Breaker Seal Kit is an essential replacement component for excavators and hydraulic breakers, ensuring reliable sealing performance and extending the overall service life of the hydraulic system. By preventing oil leakage, dust intrusion, and premature wear, the seal kit plays a critical role in maintaining consistent impact power and durability of the breaker. High-quality sealing solutions directly influence equipment efficiency, reduce downtime, and lower long-term maintenance costs. For operators and contractors working in demanding environments, choosing the right excavator hydraulic breaker seal kit is crucial to keep machines running at peak performance.
Manufacturing Process
The seal kit is manufactured through a strict process that includes precision cutting, molding, inspection, and packaging. With modern equipment and a controlled environment, each batch undergoes rigorous quality checks to ensure size accuracy, surface smoothness, and long-term sealing capability. The final packaging is export-ready, with customized labeling available for Caterpillar part references.
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 & Applications
This seal kit is specifically designed for Caterpillar hydraulic breakers and can be supplied for a wide range of models. OEM reference numbers are supported—customers may provide their part number or casting code for accurate matching.
| MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|
| H63 | H70 | H90 | H90C | H90CS | H110E | H110ES | H115E |
| H115ES | H120CS | H120E | H120ES | H130 | H130E | H130ES | H140DS |
| H140ES | H160ES | H180S | H195S | ||||
If you have an OEM reference number, our team can quickly match the exact seal kit you require.
Quality Assurance & Testing
Each kit undergoes:
- Pressure resistance testing to ensure no leakage under load.
- Dimensional checks for precision fit.
- Material performance testing against oil, heat, and abrasion.
This guarantees reliable performance even under Komatsu’s demanding bulldozing operations.
Seal Placement
In Caterpillar hydraulic breakers, critical seals are strategically positioned around the piston, cylinder, and valve system to ensure:
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.
Clear structural diagrams enable users to better understand how the seal kit integrates with the breaker's internal systems and why correct replacement is critical to performance.
Material Overview for Seal Kits
Each sealing component in the kit is made from carefully selected high-performance materials, including polyurethane, PTFE, NBR, and other engineered elastomers. These materials have been chosen for their durability, resistance to hydraulic oil, abrasion, and high-pressure working environments. Together, they create a balanced system that maintains excellent sealing reliability while adapting to temperature fluctuations and repetitive impact loads.
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
Maintenance Tips
- Replace seals periodically to avoid sudden leakage during operation.
- Always check piston and cylinder surfaces for scratches or wear before seal installation.
- Keep the breaker well-lubricated to reduce stress on the seals.
- Store seal kits in a clean, dry environment to maintain material properties.
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.
