Sealing Excellence, Securing Industry

CFKS EC End Cap Oil Seal EC8*4 EC End Cover Cap Seal

The CFKS EC8*4 End Cap Oil Seal is a high-performance EC End Cover Cap Seal designed for static sealing in gearboxes and bearing housings. This precision-engineered EC End Cap Oil Seal features a durable rubber-covered metal insert, providing a secure, leak-proof fit for industrial bores. The EC8*4 size offers superior protection against oil leakage, dust, and moisture, ensuring long-lasting structural integrity and reliable performance in demanding mechanical 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 EC Cap Seal  Packing 1 pc per bag

 

The CFKS EC End Cap Oil Seal (EC8*4) is an essential component for sealing circular openings in housings where a shaft does not pass through. Also known as an EC End Cover Cap Seal, this product is constructed with a high-quality carbon steel insert encased in a precision-molded NBR rubber shell. This “rubber-covered” design ensures a perfect static seal against the bore’s internal diameter, compensating for minor surface imperfections and thermal expansion. Whether used as a Bore Plug or a permanent housing cover, it provides a maintenance-free solution for modern machinery.

Designed to withstand the internal pressures of industrial equipment, the EC End Cap Oil Seal serves as a vital barrier against lubricant loss. By installing the EC End Cover Cap Seal, you effectively hermetically seal the bearing seat or gearbox housing, preventing oil mist from escaping and external contaminants like grime, water, and debris from entering. The EC8*4 specification is specifically optimized for compact industrial applications, offering high-precision tolerances that make it a preferred choice for automotive transmissions and power tool assemblies.

Quality is at the core of every CFKS EC End Cap Oil Seal. Our NBR (Nitrile) compounds are formulated for excellent oil resistance and a broad operating temperature range, ensuring the EC End Cover Cap Seal remains flexible and effective over years of service. The rigid metal skeleton allows for a straightforward press-fit installation using standard tools, ensuring the seal stays seated even under vibration. For wholesalers and manufacturers, our EC End Cap Oil Seal range represents the pinnacle of reliability, helping to extend the service life of critical industrial infrastructure.

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.

CFKS Seal Manufacturing Co., Ltd.
https://cfksseals.com/
 Email: cfksnacy@gmail.com  Mobile/WhatsApp/Wechat: (86) 188-3097-5917
EC End Cap Oil Seal Size List
TypeSIZE
EC End Cap Oil SealEC8*4
EC End Cap Oil SealEC10*4
EC End Cap Oil SealEC11*7
EC End Cap Oil SealEC12*4
EC End Cap Oil SealEC12*5
EC End Cap Oil SealEC14*4
EC End Cap Oil SealEC15*4
EC End Cap Oil SealEC15*5
EC End Cap Oil SealEC16*4
EC End Cap Oil SealEC16*5
EC End Cap Oil SealEC16*6
EC End Cap Oil SealEC18*4
EC End Cap Oil SealEC20*4
EC End Cap Oil SealEC20*5
EC End Cap Oil SealEC20*6
EC End Cap Oil SealEC20*7
EC End Cap Oil SealEC22*4
EC End Cap Oil SealEC22*4
EC End Cap Oil SealEC22*5
EC End Cap Oil SealEC22*5
EC End Cap Oil SealEC22*7
EC End Cap Oil SealEC23*4
EC End Cap Oil SealEC24*5
EC End Cap Oil SealEC24*5
EC End Cap Oil SealEC24*7
EC End Cap Oil SealEC24*7
EC End Cap Oil SealEC25*5
EC End Cap Oil SealEC25*6
EC End Cap Oil SealEC25*7
EC End Cap Oil SealEC25*7
EC End Cap Oil SealEC25*8
EC End Cap Oil SealEC26*4
EC End Cap Oil SealEC26*5
EC End Cap Oil SealEC26*6
EC End Cap Oil SealEC26*6
EC End Cap Oil SealEC26*7
EC End Cap Oil SealEC26*8
EC End Cap Oil SealEC27*5
EC End Cap Oil SealEC27*5
EC End Cap Oil SealEC28*4
EC End Cap Oil SealEC28*5
EC End Cap Oil SealEC28*5
EC End Cap Oil SealEC28*6
EC End Cap Oil SealEC28*7
EC End Cap Oil SealEC28*8

 

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