Heavy Equipment Parts Hydraulic Seal Kit for Hyundai Excavator
Reliable Hyundai Excavator Hydraulic Seal Kit designed for boom, arm, and bucket cylinders. Engineered for precision fit, strong sealing capability, and extended service life, ensuring stable hydraulic performance in demanding 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.
The Hyundai Excavator Hydraulic Seal Kit is an essential maintenance solution for preserving the performance of your machine’s hydraulic system. Designed to prevent leaks, maintain pressure, and protect internal components from wear, this kit helps operators achieve consistent digging, lifting, and loading efficiency.
Whether it’s for routine servicing or a complete cylinder rebuild, the kit includes all necessary seals for boom, arm, and bucket cylinders. With reliable sealing performance, it minimizes downtime and extends the operational life of your excavator.
Manufacturing Process
To guarantee quality and consistency, every seal kit undergoes a rigorous production and inspection process before delivery.
Highlights of the Process:
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 Hyundai hydraulic seal kits are engineered for a wide range of excavator models, ensuring direct OEM replacement:
- R Series: R55, R60, R140, R200, R220, R250, R290, R320, R450
- Suitable for boom, arm, and bucket cylinder rebuilds
- OEM part reference numbers available upon request
The kits provide a precise fit and dependable performance comparable to genuine Hyundai parts.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| R300LC-9 Arm cylinder seal kit | R210-7 Arm cylinder seal kit | ||||||
| 31NB-40550 | 31Y1-04032 | 31Y1-06561 | 31Y1-06731 | 31Y1-06841 | 31Y1-07751 | 31Y1-09410 | 31Y1-14050 |
| 31Y1-15395 | 31Y1-15700 | 31Y1-15880 | 31Y1-20430 | 31Y1-24670 | 31Y1-24790 | 31Y1-26410 | 31Y1-26580 |
| 31Y1-28960 | 31Y1-29100 | 31Y1-30111 | 31Y1-32910 | 31Y1-33571 | 31Y1-15230 | 31Y1-28790 | |
If you can't find the serial number you need, please contact us.
Quality Assurance
Every Hyundai Excavator Seal Kit is developed to meet strict OEM standards. Key performance guarantees include:
- Leak-free operation under extreme hydraulic pressure
- Extended service life in heavy-duty construction environments
- Reduced downtime and lower repair costs
- Dependable sealing performance across varied job conditions
Maintenance Recommendations
To get the best performance from your Hyundai hydraulic seal kit:
- Replace seals during scheduled servicing or cylinder repairs
- Keep cylinder rods clean and free from dust and abrasive particles
- Use recommended hydraulic oils and maintain proper system pressure
- Store spare seals in a dry, cool environment away from direct sunlight
Material Overview for Seal Kits
Our Hyundai hydraulic seal kits are manufactured using a carefully balanced selection of premium elastomers and rubbers. Each material is chosen for its specific strength—resistance to oil, temperature, abrasion, or chemicals—making the kit versatile and durable under different working environments. This combination ensures leak-free operation and stable performance even under high-pressure conditions.
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
Application Scenarios
- General construction and roadwork projects requiring continuous hydraulic reliability
- Quarrying, trenching, and material handling operations
- Excavator repair and rebuild workshops
- Harsh working environments where sealing strength is critical to machine uptime
Contact & Ordering
For more details, model-specific recommendations, or to place an order, please contact our sales team. Provide your Hyundai excavator model and cylinder type for accurate kit selection. We also offer OEM reference matching and export-ready packaging for global customers.
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.
