Sealing Excellence, Securing Industry

CFKS Piston Seals Cylinder Seal Dh Hydraulic Pneumatic Seal Rubber NBR FKM High-Performance Cylinder DH Seals

CFKS Guide Rings and Wear Rings are essential components for hydraulic cylinders, preventing metal-to-metal contact while guiding piston and rod movement. Available in fabric-resin composite and PTFE materials, they offer superior wear resistance and low friction for high-performance hydraulic systems.

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

 

1. Product Overview & Application
The CFKS DH Piston Seal is a double-acting hydraulic seal specifically engineered for cylinder pistons in demanding hydraulic and pneumatic systems. It is designed to withstand high working pressures and provide effective sealing in both stroke directions. These seals are widely used in construction machinery, hydraulic presses, injection molding machines, pneumatic cylinders, and industrial equipment.

 

2. Material & Performance Advantages
Manufactured with high-quality NBR rubber, FKM, or PU materials, the CFKS DH Seal delivers superior oil resistance, heat resistance, and low-friction performance. Optional PTFE or POM backup rings are available to enhance stability under high pressure and prevent extrusion. This ensures long service life, reduced maintenance costs, and reliable operation in tough working environments.

3. Key Features & Benefits

Double-acting design: Effective sealing in both piston directions.

High durability: Resistant to wear, extrusion, and chemical attack.

Wide compatibility: Suitable for hydraulic cylinders, pneumatic systems, and heavy machinery.

Material options: NBR for general use, FKM for high temperature/chemical resistance, PU for superior wear resistance.

Improved efficiency: Low friction reduces energy loss and improves cylinder performance.

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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