Front-end Loader Hydraulic Cylinder Seal Kits Rebuild for Caterpillar
High-quality CAT Wheel Loader Seal Kit designed for Caterpillar hydraulic cylinders. Made with durable PU, NBR, and Viton materials for reliable sealing, leak prevention, and extended machine life. Perfect OEM replacement for lift, tilt, and steering applications.
| 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 |
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.
The CAT Wheel Loader Seal Kit is engineered to deliver long-lasting sealing performance for Caterpillar wheel loaders working under demanding construction, mining, and quarrying conditions. Designed for hydraulic cylinders including lift, tilt, and steering applications, this kit ensures precise sealing, reliable pressure retention, and reduced oil leakage. By restoring worn seals with our high-quality replacement kits, operators can significantly extend the service life of their wheel loader cylinders while avoiding unexpected downtime.
Key Features & Advantages
- Premium Sealing Materials – Manufactured with top-grade rubber, polyurethane, and PTFE, each seal delivers high elasticity, wear resistance, and superior compatibility with hydraulic oil.
- Reliable Hydraulic Protection – Prevents leakage in critical areas such as boom, arm, and bucket cylinders, keeping your backhoe loader operating at peak performance.
- Extended Service Life – With advanced molding and heat-treatment processes, these seals offer long-lasting performance, reducing the need for frequent replacements.
- Cost-Effective Maintenance – Helps minimize downtime and repair costs by ensuring consistent sealing performance over long operating cycles.
- OEM-Compatible Fitment – Developed to meet or exceed Volvo factory standards, ensuring accurate fit and easy installation.
Manufacturing Process of Seal Kits
Our seal kits are produced under strict quality control, using advanced molding and finishing technologies to achieve precise dimensions. Each sealing component is designed to perfectly match OEM specifications for CAT wheel loaders, ensuring an exact fit and easy installation. From mold preparation to compression molding and inspection, every step is monitored to eliminate defects and ensure a consistent standard of quality.
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 ensures every seal kit performs to OEM standards or better.
Material & Manufacturing Quality
Each seal kit is manufactured using a premium selection of materials such as NBR (Nitrile Rubber) for oil resistance, PU (Polyurethane) for abrasion resistance, and FKM (Viton) for high-temperature performance. These materials are carefully tested to ensure compatibility with hydraulic oil and extreme working environments. The combination of these materials guarantees:
- Long service life even under high-pressure cycles.
- Resistance to wear and tear from dust, sand, and debris.
- Stable performance in both hot and cold climates.
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
Compatibility with Caterpillar Wheel Loader Models
 This seal kit is fully compatible with a wide range of CAT wheel loader models, including but not limited to:
- CAT 950, 950G, 950H, 950M
- CAT 966C, 966G, 966H, 966M
- CAT 980C, 980G, 980H, 980K
- CAT 988B, 988F, 988H
If you require confirmation of compatibility with a specific machine or OEM reference number, our team can provide detailed cross-checking support.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| 7X2669 | 7X2703 | 7X2710 | 7X2739 | 7X2747 | 7X2749 | 7X2751 | 7X2752 |
| 7X2760 | 7X2767 | 7X2771 | 7X2791 | 9X6392 | 2549037K | ||
OEM replacement fitment with reference part numbers available upon request
Quality Testing & Reliability
Each seal kit undergoes leakage, pressure, and wear resistance testing before leaving the factory. This ensures the seals maintain optimal elasticity and strength throughout their lifespan. By replacing worn-out seals with our premium kit, operators can reduce hydraulic oil loss, maintain smoother cylinder operation, and lower overall maintenance costs.
Application Scenarios
Whether your Caterpillar wheel loader is used in road construction, aggregate handling, quarrying, forestry, or material loading, our seal kits provide dependable protection for hydraulic cylinders. Their robust sealing performance helps prevent contamination, sustain hydraulic pressure, and improve machine uptime.
Maintenance Recommendations
- Replace seals at regular intervals to prevent unexpected leaks.
- Keep hydraulic oil clean and change it according to CAT’s service schedule.
- Store spare seal kits in a dry, dust-free environment to maintain elasticity.
- Inspect cylinders during every major service to identify early signs of wear.
👉 This CAT Wheel Loader Seal Kit provides a cost-effective, OEM-quality replacement solution to maximize machine reliability and minimize downtime in tough working environments.
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.
