Sealing Excellence, Securing Industry

CFKS TBV Oil Seal 55*70*7 TBV Rubber Hydraulic Piston Seal for Excavator Seal

The CFKS TBV Oil Seal 55×70×7 is a durable NBR rubber 55*70*7 hydraulic piston seal 55-70-7 designed for excavator cylinders. It offers strong sealing performance, excellent wear resistance, and stable operation, making it ideal for hydraulic cylinder repair 55 70 7 and heavy-duty machinery maintenance.

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Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type 55*70*7 TBV Oil Seal  Packing 1 pc per bag

 

The CFKS TBV Oil Seal 55*70*7 is a high-performance hydraulic piston seal designed for excavator cylinders and heavy-duty industrial equipment. Manufactured with premium NBR rubber, this TBV piston seal offers excellent wear resistance, stable sealing performance, and long service life, making it ideal for hydraulic system repair and maintenance.

This TBV Hydraulic Piston Seal features a compact structure and excellent sealing capability to withstand continuous high pressure and high-frequency movement. The TBV Rubber Sealing Ring design minimizes friction, improves longevity, and ensures reliable operation—ideal for heavy-duty machinery and hydraulic cylinder repair.

CFKS TBV Rubber Hydraulic Seal is manufactured with precise dimensions for simple installation and perfect compatibility. The standard 55707 size fits excavator cylinders and various hydraulic repair applications, providing excellent sealing performance during equipment maintenance or overhaul.

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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