Sealing Excellence, Securing Industry

CFKS HBY Rod Buffer Oil Seal 40*55.5*6 PTFE HBY Type Hydraulic Oil Seal Excavator Cylinder HBY Seal

CFKS HBY 40 55.5 6 rod buffer oil seal 40×55.5×6 is a PTFE hydraulic buffer seal 40*55.5*6 designed for excavator and hydraulic cylinder applications. This HBY seal 40-55.5-6 absorbs pressure spikes, reduces shock loads, and protects primary rod seals. With low friction and high wear resistance, it ensures stable sealing performance, extended service life, and improved hydraulic system reliability in heavy-duty environments. Find your sealing solution with CFKS — contact us for a quote.

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

 

The CFKS HBY rod buffer oil seal 40*55.5*6 is a high-performance HBY seal designed for hydraulic cylinder rod sealing systems. As a buffer seal, it works together with primary rod seals to absorb pressure peaks, reduce shock loads, and improve overall hydraulic sealing efficiency.

Manufactured from premium PTFE material, this HBY rod buffer seal offers low friction, excellent wear resistance, and outstanding pressure resistance. The PTFE structure ensures smooth rod movement while effectively minimizing extrusion and leakage under high-pressure working conditions.

CFKS HBY hydraulic buffer seals are widely used in excavator cylinders, construction machinery, and heavy-duty hydraulic equipment. Designed for demanding environments, this PTFE hydraulic oil seal extends the service life of rod seals, enhances system stability, and provides reliable sealing performance in dynamic applications.

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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