Factory Price Seal O-ring Kit Box fit Sumitomo Excavator
The Sumitomo Excavator O-Ring Kit comes in 447, 666, and 771-piece options, providing complete sealing solutions for hydraulic systems. Made with high-quality NBR and Viton materials, these kits ensure durability, oil resistance, and OEM fitment for Sumitomo excavators.
| 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 Sumitomo Excavator O-Ring Kit is a professional sealing solution designed for the hydraulic systems of Sumitomo excavators. Hydraulic performance depends heavily on the quality of sealing components, and this kit ensures you always have the right size O-ring on hand for maintenance and emergency repairs. Manufactured from premium NBR and Viton materials, our O-rings offer excellent oil resistance, wear resistance, and temperature stability, making them suitable for heavy-duty construction environments.
This kit is available in three different options – 447 pieces, 666 pieces, and 771 pieces – to meet the needs of different users, from individual operators to large workshops. Each set is neatly packed in a durable, compartmentalized box for quick identification and easy use.
Available Kit Options
- 447-piece kit – Compact yet practical, covering the most common hydraulic O-ring sizes used in Sumitomo excavators. Ideal for contractors and operators who need reliable seals for routine maintenance.
- 666-piece kit – A comprehensive kit with extended coverage, perfect for repair shops or service teams handling multiple excavator models.
- 771-piece kit – The most complete option, providing an extensive selection of O-rings to support complex repair tasks and long-term use.
Material & Manufacturing Process
- NBR (Nitrile Rubber): Offers superior resistance to hydraulic oil, fuel, and grease, making it a reliable choice for standard operating conditions.
- Viton (FKM): Delivers high resistance to extreme temperatures and aggressive chemicals, suitable for demanding work environments.
Every O-ring is manufactured to precise dimensions, ensuring tight sealing, proper fitment, and reduced hydraulic leakage risks. Strict quality inspection is carried out before packaging to guarantee long-term performance.
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.
Key Advantages
- OEM Compatibility: Designed to fit Sumitomo excavator hydraulic systems, including cylinders, pumps, and valves.
- Reduced Downtime: With multiple sizes readily available, repair work becomes faster and more efficient.
- Cost-Effective Maintenance: One kit replaces the need for multiple individual orders, saving time and money.
- Organized Storage: Each kit comes in a labeled, sturdy plastic box, preventing mix-ups and ensuring long-term usability.
- Flexible Options: Choose the kit size that best suits your maintenance requirements.
Application Benefits
The Sumitomo O-Ring Kits are widely used in:
- Hydraulic cylinder repairs
- Pump and valve sealing
- Routine maintenance for excavators working in mining, construction, and road-building projects
- Emergency repair tasks where downtime must be minimized
Packaging & Delivery
All kits are packed in impact-resistant plastic cases with clear size labeling. The O-rings are arranged in separate compartments for easy access. Packaging is reinforced with moisture-proof and anti-rust protection to ensure the seals remain in perfect condition during storage and transportation.
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.
