Sealing Excellence, Securing Industry

CFKS Rubber Oil Seal EC NBR FKM Rubber EC Oil Seal End Cap Cover Seal for Gearbox

High-quality CFKS EC Oil Seal made of NBR or FKM rubber. Designed for gearbox and rotating shaft applications, this End Cap Cover Seal provides effective sealing performance, oil leakage prevention, and protection against dust and contaminants.

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

 

1️⃣ Reliable EC Oil Seal for Gearbox Applications
The CFKS EC Oil Seal, also known as an End Cap Cover Seal, is specially developed to seal open shaft ends in gearboxes and other rotating machinery. Made from premium NBR or FKM rubber, the EC Oil Seal provides a tight, secure closure that resists oil leakage and keeps out contaminants such as dirt and moisture. Ideal for both OEM and aftermarket gearbox sealing applications, this rubber oil seal supports stable performance even under high pressure and temperature conditions.

2️⃣ NBR and FKM Rubber Materials for Diverse Needs
CFKS EC Oil Seals are available in durable NBR (Nitrile) and FKM (Viton®) rubber options. NBR offers excellent resistance to mineral oils and wear, while FKM ensures outstanding performance in high-temperature and chemically aggressive environments. These rubber end cap seals are widely used in industrial gearboxes, automotive transmissions, electric motors, and mechanical drive systems, ensuring long-lasting performance with minimal maintenance.

3️⃣ EC End Cap Cover Seal with High Precision Fit
Engineered for a precise fit on housing bores, the CFKS EC Oil Seal delivers a strong sealing effect without shaft contact. The design ensures reduced friction, extended seal life, and reliable performance for rotating components. Whether you’re replacing worn-out seals or designing custom equipment, CFKS provides a wide range of EC Oil Seals in different sizes and materials to meet your specific application needs.

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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