Digger Parts Hydraulic Seal Kits fit Case Excavator
The Case Excavator Seal Kits is engineered to deliver reliable sealing performance for hydraulic cylinders under demanding working conditions. Made from premium materials and manufactured with precision, these kits ensure long-lasting durability and efficient protection against leakage, abrasion, and extreme temperatures.
| Material | NBR/ PTFE/ ACM/ VMQ/ FKM/ HNBR/ EPDM/ Silicone and etc |
|---|---|
| Working Temperature | -40–120℃(according to the material) |
| Pressure | Up to 690bar(10000psi) |
| Color | Black/Orange/Brown/White/Brown |
| MOQ | 5 Pieces |
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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 Case Excavator Seal Kits is designed specifically for the hydraulic systems of Case excavators, covering boom cylinders, arm cylinders, bucket cylinders, and other critical components. With exact-fit design and strict dimensional control, our seal kits ensure smooth operation and extend the service life of your equipment.
Manufacturing Strength
All Case seal kits are produced in our modern factory, equipped with:
- CNC-controlled injection molding machines
- Automated inspection systems for dimensional accuracy
- Strict batch testing for hardness, tensile strength, and thermal resistance
- Custom OEM packaging and labeling for global export
Manufacturing Process
Before reaching the hands of excavator operators, each Case excavator seal kit goes through a precise and standardized manufacturing process. From raw material selection to high-accuracy molding, machining, and quality inspection, every stage is designed to ensure the seals deliver excellent wear resistance, oil resistance, and long-lasting reliability. Advanced rubber compounding and elastomer mixing guarantee stable material properties, while CNC finishing and strict testing provide dimensional accuracy and leak-proof performance. This step-by-step process ensures that the final seal kits are not only compatible with Case excavators but also capable of withstanding heavy-duty working environments.
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.
OEM Compatibility & Fitment
Our Case Excavator Seal Kits are designed to match OEM specifications for various models, ensuring direct replacement without modifications. If you have an OEM reference number or cylinder code, our team can confirm the correct kit quickly.
| PART NUMBER | |||||||
|---|---|---|---|---|---|---|---|
| 72283999 | 72284002 | 72284189 | LZ00443 | LZ00444 | LZ00445 | LZ00446 | LZ00447 |
| LZ007300 | LZ007310 | LZ007320 | LZ007630 | LZ007640 | LZ007650 | ||
If you can't find the serial number you need, please contact us.
Quality Control & Testing
- Dimensional inspection
- Pressure leakage testing under working conditions
- OEM standard compliance
- Traceable batch records for reliability
Advantages of Choosing Our Seal Kits
- Extended hydraulic cylinder service life
- Reduced downtime and repair costs
- Factory-direct supply with strict quality assurance
- OEM replacement and customized support available
Material Overview for Seal Kits
Each seal kit is composed of selected elastomers and polymers, chosen for their performance under different working environments:
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
Why Choose Our Case Seal Kits?
- Wide material selection for different environments
- Strict quality control from raw material to packaging
- OEM-level compatibility with Case hydraulic systems
- Export-ready packaging with global shipping 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
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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.
