Hydraulic O-Ring Kit Box for Hyundai
The Hyundai Excavator O-Ring Kit provides a reliable and convenient sealing solution for hydraulic systems and undercarriage components. Each kit is carefully assembled with premium-grade rubber seals, resistant to wear, heat, and hydraulic fluid, ensuring durability and preventing costly oil leaks. Available in three set options — 376 pieces, 666 pieces, and 800 pieces — this comprehensive seal box meets the diverse maintenance needs of Hyundai excavators in various models and 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.

A complete O-Ring kit is an essential tool for excavator owners, operators, and maintenance workshops. Designed specifically for Hyundai excavators, this O-Ring box helps minimize downtime by providing all the necessary sealing elements in one organized package. Whether for regular preventive maintenance or emergency repair, having a well-stocked O-Ring kit ensures quick replacement and effective sealing performance, extending the service life of hydraulic systems and undercarriage components.
Kit Options and Contents
To meet different operational and service demands, our Hyundai excavator O-Ring kits are available in three variations:
- 376-piece set – A compact selection designed for routine maintenance tasks and common hydraulic repairs.
- 666-piece set – A medium-sized kit offering a broader range of seal sizes for mid-level service workshops.
- 800-piece set – The most complete solution, providing the widest assortment of O-Rings to cover complex repairs and extended use across multiple excavator models.
Each O-Ring is manufactured with precision dimensions, ensuring compatibility and proper fitment during replacement.
Manufacturing Process of Seal Kits
Every seal kit undergoes a strict production process and testing phase to guarantee long-term reliability:

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 meticulous process ensures that every seal kit meets or exceeds OEM standards.
Material and Performance
The seals are made from premium NBR (Nitrile Butadiene Rubber) and FKM (Viton, optional for high-temperature use). These materials are chosen for their excellent resistance to hydraulic oil, fuel, grease, and extreme working temperatures. With outstanding elasticity and tear resistance, the O-Rings guarantee long-lasting performance, reducing the risk of leakage and protecting sensitive components within the hydraulic system.
Advantages of Using Our Hyundai O-Ring Kit
- OEM-Grade Quality – Manufactured to meet or exceed Hyundai’s sealing standards.
- Comprehensive Coverage – Different kit sizes to support minor repairs or full-scale overhauls.
- Organized Storage Box – Each O-Ring is systematically arranged by size, allowing quick identification and replacement.
- Extended Service Life – Resistant to abrasion and hydraulic oil, ensuring reliability in harsh construction environments.
- Cost Efficiency – Prevents downtime and avoids the higher costs of purchasing single seals separately.
Applications
The Hyundai Excavator O-Ring Kit is widely applicable in:
- Hydraulic cylinders (boom, arm, bucket)
- Hydraulic pumps and valves
- Undercarriage components requiring effective sealing
- Preventive maintenance schedules and field service operations
With these kits, operators and service teams can handle sealing requirements without delay, ensuring excavators remain operational in demanding worksites.
Quality Control and Packaging
Each kit undergoes strict quality control, with seals tested for hardness, elasticity, and oil resistance. The O-Rings are stored in durable plastic boxes with compartments, ensuring easy access and long-term storage without contamination. Labels and size charts are included for convenient use in workshops or on-site maintenance.
OEM Replacement and Compatibility
Our O-Ring kits are fully compatible with Hyundai excavator models and support OEM replacement requirements. If you have specific part numbers or model references, our team can provide guidance to ensure correct kit selection.
The Hyundai Excavator O-Ring Kit is a must-have for operators, dealers, and maintenance teams, offering reliable sealing solutions in one organized package. With three kit sizes — 376, 666, and 800 pieces — you can choose the right option according to your service requirements. Durable, cost-effective, and easy to use, this kit ensures Hyundai excavators remain efficient and leak-free in every project.
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.









