Seal Kit Replacement for Chicago Pneumatic Hyd Breaker Hammer
Premium Chicago Pneumatic Hydraulic Breaker Seal Kits engineered for heavy-duty applications. Designed to prevent hydraulic oil leakage, improve impact energy efficiency, and extend the service life of your breaker in tough working environments.
| 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 Chicago Pneumatic Hydraulic Breaker Seal Kit is a critical replacement component designed to ensure leak-free operation and maximum durability of hydraulic hammers. Hydraulic breakers face extreme conditions, including high operating pressure, heavy vibration, abrasive dust, and debris infiltration. Without a reliable seal kit, the breaker is at risk of hydraulic oil leakage, reduced impact force, overheating, and accelerated wear—all of which lead to costly downtime and lost productivity.
Our hydraulic hammer seal kits for Chicago Pneumatic breakers are manufactured to exact OEM specifications, guaranteeing a precise fit and restoring the hammer’s original power. By maintaining consistent sealing performance, they reduce maintenance costs, extend service life, and improve breaker efficiency across all jobsite applications.
Quality Manufacturing Process
Every Chicago Pneumatic breaker seal kit is produced following strict quality standards:

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.
This process guarantees reliable sealing even under the harshest operating conditions.
Key Features & Benefits
- Leak Prevention – Keeps hydraulic oil contained, ensuring smooth and powerful performance.
- Extended Component Life – Protects pistons, bushings, and cylinders from premature wear.
- Impact Energy Retention – Restores and maintains original breaker striking force.
- Durability in Harsh Environments – Resistant to dust, debris, and high-frequency vibration.
- OEM Fitment – Direct compatibility with Chicago Pneumatic breaker models for easy installation.
Compatible Chicago Pneumatic Breaker Models
Our seal kits cover a wide range of Chicago Pneumatic hydraulic breaker series, including but not limited to:
- RX Series: RX2, RX4, RX6, RX8, RX11
- RX Light-Medium Range: RX18, RX22, RX25
- RX Heavy Range: RX30, RX38, RX46, RX54, RX58
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| CP75H | CP80H | CP100 | CP150 | CP200 | CP250H | CP290H | CP300 |
| CP400 | CP550 | CP600H | CP700H | CP750 | CP1150 | CP1550 | RX2 |
| RX3 | RX4 | RX6 | RX8 | RX18 | RX22 | RX30 | RX46 |
(Custom seal kits available upon request.)
Applications
- Mining & Quarrying – Efficient rock breaking in tough environments.
- Construction – Roadwork, trenching, and tunneling projects.
- Demolition & Recycling – Concrete and reinforced structure removal.
- Utility Projects – Pipeline installation and site preparation.
Seal Placement
In 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
Our seal kits are made from high-performance elastomers and polymers selected for their unique sealing capabilities:

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 Recommendations
- Inspect seals at regular service intervals.
- Replace seal kits during scheduled breaker overhauls.
- Always use clean hydraulic oil meeting OEM requirements.
- Store unused kits in dry, cool conditions to preserve material integrity.
Why Choose Our Chicago Pneumatic Seal Kits?
- OEM-level precision and compatibility
- Long-lasting durability under extreme workloads
- Reduced downtime and maintenance expenses
- Wide coverage across multiple breaker models
- Global supply with consistent quality assurance
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.






