Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
D-Ring Kit – 9 Sizes 75 Pcs for Excavator Hydraulic Cylinder Repair
Product Advantages
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Specialized for Hydraulic Cylinders: Specifically designed for excavator hydraulic cylinder D-ring applications, ensuring compatibility with a wide range of models and systems.
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Superior Sealing Performance: D-ring cross-section design provides better sealing stability and reduced friction compared to standard O-rings, especially in dynamic applications.
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High-Performance Rubber Material: Manufactured from premium rubber compound with excellent oil resistance, wear resistance, and reliable sealing performance in demanding working conditions.
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Comprehensive Size Coverage: Includes 75 D-rings across 9 sizes, covering common sealing needs for excavator hydraulic cylinder repair and maintenance.
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Convenient Kit Format: Eliminates the need to source individual seals separately, saving maintenance time and ensuring you have the right part when you need it.
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Organized Storage: Comes in a sturdy, labeled plastic case with compartmentalized slots for easy size identification and quick access during repairs.
Working Principle
D-rings (also known as D-section rings or D-profile seals) function similarly to O-rings but feature a D-shaped cross-section (flat bottom with a rounded top). This unique profile provides two key advantages in hydraulic cylinder applications: First, the flat bottom surface offers better stability in the groove, preventing twisting or rolling during piston or rod movement. Second, the rounded top surface ensures consistent contact pressure against the sealing face, delivering reliable sealing performance even under varying pressures and dynamic conditions. The D-ring design also provides lower friction compared to standard O-rings, reducing wear on both the seal and the mating surfaces, and extending the service life of the cylinder components.
Product Details
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Product Name: D-Ring Kit
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Total Quantity: 75 pcs
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Size Range: 9 different sizes
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Application: Excavator hydraulic cylinder repair and maintenance
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Material: High-performance rubber compound (oil and wear resistant)
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Storage Case: Durable plastic case with labeled compartments
Size List
| Part No. | Size (mm) | Qty |
|---|---|---|
| 1P3700 | 25.4 × 3.4 × 5.0 | 10 pcs |
| 1P3702 | 19.0 × 3.4 × 5.0 | 10 pcs |
| 1P3703 | 31.9 × 3.4 × 5.0 | 10 pcs |
| 1P3704 | 38.2 × 3.4 × 5.0 | 10 pcs |
| 1P3705 | 44.7 × 3.4 × 5.0 | 10 pcs |
| 1P3706 | 51.1 × 3.4 × 5.0 | 10 pcs |
| 1P3707 | 54.2 × 3.4 × 5.0 | 10 pcs |
| 1P3708 | 57.4 × 3.4 × 5.0 | 5 pcs |
| 1P3709 | 63.9 × 3.4 × 5.0 | 5 pcs |
Application Range
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Excavator Hydraulic Cylinders: Piston seals, rod seals, and cylinder head seals
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Construction Machinery: Suitable for loaders, bulldozers, cranes, and other heavy equipment hydraulic systems
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Industrial Equipment: Hydraulic cylinder sealing applications in various industrial machinery
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Maintenance & Repair: Ideal for workshop use, field repairs, and preventive maintenance programs
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