Silicone Seal O-ring Kit Box fit Hitachi Excavator
The Hitachi Excavator O-Ring Kit provides a complete range of sealing solutions designed to maintain the hydraulic performance of Hitachi machines. With five different kit options (383, 506, 626, 713, and 792 pieces), these kits cover the most common O-Ring sizes needed for hydraulic cylinder repair, pump maintenance, and general service work, ensuring fast, reliable, and leak-free operation.
| 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.
For Hitachi excavators, reliable sealing is vital to ensure efficiency, safety, and durability. Hydraulic leaks caused by worn or low-quality O-Rings can lead to power loss, overheating, and expensive downtime. The Hitachi O-Ring Kit is specially developed to match the requirements of Hitachi excavators, providing excellent oil resistance, temperature stability, and long-lasting durability.
Each kit is stored in a durable plastic case with organized compartments, making it easy for mechanics and operators to quickly find the right size during maintenance or emergency repairs.
Kit Options
To meet different service needs, we provide five variations of the Hitachi O-Ring Kit:
- 383-Piece Kit – Compact and lightweight, ideal for field service and small-scale repairs.
- 506-Piece Kit – A balanced option, covering a wide range of commonly used O-Rings for routine maintenance.
- 626-Piece Kit – Offers extended coverage for multiple hydraulic applications, suitable for busy workshops.
- 713-Piece Kit – Provides nearly complete sealing coverage for medium and large-scale servicing.
- 792-Piece Kit – The most comprehensive kit, including nearly every size needed for Hitachi excavators, perfect for contractors and professional service teams.
Each kit comes with a detailed size chart and clear compartment labeling for easy identification.
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 Quality Standards
The O-Rings are manufactured using premium NBR (Nitrile Butadiene Rubber) for excellent resistance to hydraulic oils, diesel, and grease. For higher temperature or aggressive fluid conditions, FKM (Viton) O-Rings are also available.
Key benefits of material selection include:
- Superior oil and fuel resistance to prevent swelling and wear.
- Elasticity and flexibility for tight sealing under pressure.
- Broad temperature tolerance, from low to high working environments.
- Extended service life, reducing replacement frequency and costs.
Advantages of Hitachi O-Ring Kit
- OEM-compatible dimensions, ensuring precise fit and reliable sealing.
- Comprehensive coverage of multiple hydraulic systems.
- Organized storage box prevents mixing and loss of O-Rings.
- Time-saving solution for workshops and on-site repairs.
- Versatile application for cylinders, pumps, control valves, and undercarriage components.
Applications
These O-Ring kits are suitable for use across multiple Hitachi excavator systems, including:
- Hydraulic cylinders (boom, arm, bucket cylinders)
- Hydraulic pumps and motors
- Control valves and fittings
- Undercarriage components requiring sealing solutions
- Preventive maintenance in service workshops and field operations
Packaging & Quality Assurance
Every Hitachi O-Ring Kit is supplied in a durable, impact-resistant plastic case with dedicated compartments. Before packaging, O-Rings are inspected for hardness, tensile strength, dimensional accuracy, and oil resistance, ensuring that every piece meets strict quality standards. The box is designed for long-term storage, making it a reliable maintenance companion.
Maintenance Tips
- Store the O-Ring box in a dry and cool place, away from sunlight.
- Always clean the sealing groove and surface before installation.
- Choose the correct O-Ring size to avoid extrusion or leakage.
- Replace O-Rings whenever hydraulic components are disassembled.
The Hitachi Excavator O-Ring Kit is an essential sealing solution for workshops, contractors, and operators. With five kit sizes (383, 506, 626, 713, and 792 pieces), it offers flexibility for different maintenance needs — from small emergency repairs to comprehensive hydraulic servicing. Reliable, organized, and built for long-lasting performance, this kit helps minimize downtime and ensures Hitachi excavators operate at peak efficiency.
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.
