NBR90° Hydraulic O-ring Kit Box fit Sunward Excavator
The Sunward Excavator O-Ring Kit (NBR90°) is engineered for critical hydraulic applications in distribution valves, hydraulic pumps, and hose joints. Made from high-hardness NBR material, it offers superior oil resistance, high-pressure sealing, and long-lasting durability for Sunward 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 Sunward Excavator O-Ring Kit is a professional sealing solution designed for critical hydraulic applications. This kit is crafted from NBR90° (Nitrile Butadiene Rubber, 90 Shore hardness), a high-strength material engineered to withstand extreme hydraulic pressures, temperature fluctuations, and long-term oil exposure.
Unlike standard O-rings, the NBR90° compound ensures superior rigidity and sealing performance, making it particularly suitable for demanding applications within control valves, hydraulic pumps, and hose fittings. Whether for routine maintenance or urgent repair tasks, this kit provides the reliability and durability needed to keep Sunward excavators running smoothly on the toughest job sites.
Key Features
- Premium Material – NBR90°: Offers excellent oil resistance, wear resistance, and high-pressure sealing performance.
- Targeted Applications: Specifically engineered for distribution valves, hydraulic pumps, and pipe joints where sealing reliability is critical.
- OEM-Level Compatibility: Designed to match Sunward excavator hydraulic systems, ensuring leak-free performance and extended service life.
- Durable in Harsh Environments: Resistant to hydraulic oils, heat, and mechanical stress, providing stable performance in construction, mining, and heavy-duty operations.
- Professional Maintenance Solution: Reduces equipment downtime, improves hydraulic efficiency, and extends the overall lifespan of the excavator.
Material & Manufacturing Process
Each O-ring undergoes precision molding and strict inspection to guarantee dimensional accuracy, elasticity, and sealing strength.
- NBR (Nitrile Rubber): Offers superior resistance to petroleum-based oils and stable performance across standard operating temperatures.
- Viton (FKM): Provides extended durability against extreme temperatures and aggressive chemicals, suitable for demanding job sites.
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.
Why NBR90° Material?
- High Shore Hardness (90°): Provides greater compression set resistance and ensures the O-ring maintains its shape under high pressure.
- Enhanced Oil Resistance: Performs reliably in petroleum-based hydraulic fluids.
- Temperature Stability: Suitable for a wide range of working conditions, typically from -30°C to +120°C.
- Extended Lifespan: Less prone to deformation, cracking, or premature failure compared to standard sealing materials.
This makes the Sunward O-ring kit not just a repair accessory, but a long-term protection component for critical hydraulic parts.
Applications
The O-ring kit is widely used in the following parts of Sunward excavators:
- Distribution Valve (Control Valve): Ensures leak-free fluid direction and pressure control.
- Hydraulic Pump: Maintains high-pressure oil sealing for smooth and powerful hydraulic actuation.
- Pipe Joints & Hose Connections: Prevents leakage and contamination at connection points, safeguarding overall hydraulic system integrity.
Benefits for Operators & Workshops
- Comprehensive Maintenance Solution: Suitable for multiple critical hydraulic components.
- Minimized Downtime: Ready-to-use kit ensures faster repairs and reduced equipment downtime.
- Cost-Effective: One kit can handle a wide range of sealing needs, eliminating repeated orders.
- Professional Reliability: Maintains OEM-level sealing performance for long-term excavator operation.
Packaging & Storage
The Sunward O-ring kit is packaged in a sturdy, compartmentalized plastic case for easy storage and quick identification. Each O-ring is carefully labeled and arranged, ensuring efficient use in workshops or field repair operations. The box is designed to resist dust, oil contamination, and damage during 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.
