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CFKS ODI Hydraulic Piston Seal U-Cup Wiper Seal PU 80*47*16 Hydraulic Cylinder Seal
CFKS ODI Hydraulic Piston Seal U-Cup Wiper Seal PU 80*47*16 Hydraulic Cylinder Seal - Image 2
CFKS ODI Hydraulic Piston Seal U-Cup Wiper Seal PU 80*47*16 Hydraulic Cylinder Seal - Image 3
CFKS ODI Hydraulic Piston Seal U-Cup Wiper Seal PU 80*47*16 Hydraulic Cylinder Seal - Image 4

CFKS ODI Hydraulic Piston Seal U-Cup Wiper Seal PU 80*47*16 Hydraulic Cylinder Seal

The CFKS ODI Hydraulic Piston Seal (80*47*16) is a heavy-duty, single-acting U-cup designed specifically for high-pressure piston applications in hydraulic cylinders. Manufactured from premium 93 Shore A Polyurethane (PU), it offers exceptional wear resistance and sealing efficiency, maintaining system pressure even under extreme reciprocating loads and shock pressures.

Superior Abrasion Resistance: High-modulus PU material ensures a long service life in abrasive or poorly lubricated conditions.

Pressure-Activated Sealing: The U-cup geometry utilizes hydraulic pressure to energize the sealing lips against the cylinder wall.

Static & Dynamic Integrity: Precision-engineered lips provide a tight seal at both zero-pressure (static) and high-pressure (dynamic) states.

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Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type ODI Seal  Packing 1 pc per bag

 

Engineering Principle: Pressure-Energized Reciprocating Sealing
The ODI Piston Seal operates on a “Self-Energizing” principle common in high-performance hydraulic actuators. As internal hydraulic pressure rises, fluid enters the “U” shaped cavity of the seal, forcing the outer dynamic lip to press more firmly against the cylinder bore. This direct relationship between pressure and contact force ensures that the seal maintains a leak-proof barrier during the most demanding work cycles. This design is critical for preventing “drifting”—where a cylinder fails to hold its position under load—by eliminating fluid bypass across the piston.

Material Selection & Durability: High-Modulus PU vs. Traditional Elastomers
For the 80*47*16 specification, material toughness is paramount. We utilize a high-performance Polyurethane (PU) compound which provides significantly higher tensile strength and tear resistance compared to standard NBR. This is vital for a seal with a 16mm height, as it must resist “extrusion”—the tendency for the seal to be forced into the clearance gap under high pressure. Our PU formula is optimized for mineral oils and water-based fluids, maintaining its elasticity in temperatures ranging from -35°C to +100°C.

Installation & Maintenance: Snap-Fit Precision for Cylinder LongevityThe ODI profile is engineered for installation into semi-open or open piston grooves. The 16mm width provides a large contact surface area, which helps stabilize the piston against axial vibration and minor side-loading. During installation, it is critical to use a lead-in chamfer on the cylinder barrel to avoid cutting the outer lip. Regular maintenance should include checking the cylinder bore for “washtub” wear or scoring; while the PU material is resilient, a smooth surface finishis required to achieve a truly “low friction” service life.

Frequently Asked Questions (FAQ)

Why does my CFKS oil seal fail prematurely? Common causes and prevention tips2025-06-26T15:44:39+08:00

Premature oil seal failure can result from improper installation, poor shaft finish, incorrect material selection, or excessive pressure. To prevent this, ensure the shaft surface is smooth and within tolerance, use correct tools during installation, and choose seals made from materials compatible with your media and temperature.

How to correctly install a CFKS industrial oil seal to avoid leakage2025-06-26T16:04:32+08:00

Always clean the shaft and bore before installation. Use appropriate seal drivers to avoid deformation. Lubricate the lip before fitting to reduce friction during the first rotation. Ensure the seal is seated evenly and not tilted to avoid leaks.

What to do when your CFKS hydraulic seal is leaking under pressure2025-05-20T16:33:14+08:00

Check if the pressure exceeds the seal’s rated limit. Examine for wear, hardening, or improper installation. Replace the seal if damaged, and consider upgrading to a high-pressure CFKS seal variant. Also, verify that the housing and shaft are properly aligned.

How to choose the right CFKS oil seal for extreme operating environments2025-05-20T16:34:39+08:00

For high temperatures, aggressive chemicals, or abrasive environments, choose CFKS seals made of FKM, PTFE, or high-performance elastomers. Consider using seals with protective dust lips or metal casing. Our team can recommend the best fit for your application.

 

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