Sealing Excellence, Securing Industry

CFKS Hydraulic Piston Seal KDAS DAS Oil Seal Pneumatic Cylinder Rod Piston Compact Seal Hydraulic Seal Piston Rod Seals

CFKS KDAS / DAS compact hydraulic seals are high-performance piston and rod seals designed for hydraulic and pneumatic cylinders. Manufactured from premium PU, NBR, and PTFE materials, they offer outstanding resistance to pressure, wear, and temperature, ensuring efficient and long-lasting sealing performance for demanding applications.

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

 

🔧 1. High-Efficiency Compact Seals for Hydraulic and Pneumatic Cylinders
CFKS hydraulic piston seals, including KDAS and DAS types, are engineered as compact, double-acting sealing elements used in both piston and rod applications. These seals combine multiple lips in one profile to ensure superior sealing in dynamic conditions, particularly where bidirectional pressure and space-saving design are critical.

 

🛠 2. Durable Materials for Extended Service Life
CFKS offers DAS/KDAS piston rod seals made from high-quality polyurethane (PU), nitrile rubber (NBR), and PTFE bronze composites, depending on working conditions. These seals resist high pressure (up to 400 bar), temperature extremes, and abrasive environments, making them ideal for construction equipment, forklifts, press machines, and hydraulic cylinders in industrial automation.

⚙️ 3. Versatile Compatibility and Custom Options
Available in standard metric and inch sizes, CFKS KDAS / DAS hydraulic sealing elements are compatible with most ISO groove standards. They are widely used as OEM replacement seals and custom seals in hydraulic systems. The modular structure of these compact seals enables easy installation, lower friction, and excellent sealing even under high-speed reciprocating motion.

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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