Sealing Excellence, Securing Industry

CFKS Customized PU JA Oil Seal 40*50*6/10 Hydraulic JA Type Wiper Seal JA Scraper Seal

Maximize equipment uptime in harsh industrial environments with the CFKS JA Type Wiper Seal 40*50*6/10. Engineered from premium polyurethane (PU), this axial scraper effectively excludes dirt, dust, and moisture from hydraulic rods while retaining essential lubricating films.

  • High-Efficiency Scraping: Knife-edge lip profile prevents abrasive particles from entering the hydraulic system.

  • Tough PU Compound: Outstanding abrasion resistance and tear strength compared to standard elastomers.

  • Snug Groove Fit: Optimized dynamic lip design handles high linear velocities and prevents axial blow-by.

Find your sealing solution with CFKS — contact us for a quote.

Product Name CFKS JA Wiper Scraper Seal Specification 40*50*6/10
Material Premium Polyurethane (PU) Feature High Abrasion & Tear Resistance
Work Temperature -20℃ to 100℃ Hardness 90-95 Shore A
Type Hydraulic Rod Wiper Seal Usage Excavators, Presses, Loaders, Cylinders

 

The CFKS JA Type profile operates as a specialized axial scraper seal, specifically engineered to protect hydraulic cylinder rods from external contaminants. As the rod retracts, the sharply defined scraper lip exerts a precise radial preload against the metal surface, shearing off dirt, mud, and water. Under high-speed linear motion, centrifugal forces and ambient dust threaten the primary pressure seals; the JA profile counters this by maintaining continuous surface contact without causing excessive parasitic drag, ensuring a completely clean stroke every time.

 

Material integrity determines sealing longevity. This JA scraper is molded from high-performance Polyurethane (PU), delivering up to four times the wear resistance of standard NBR. While FKM is reserved for extreme thermal environments, our structural PU provides the ideal balance of mechanical toughness, high tensile strength, and superior resistance to extrusion or tearing under heavy physical impact. It remains highly resilient against mineral-based hydraulic oils, grease, and ambient weathering elements.

Designed for open and semi-open groove configurations, the JA Type wiper allows for straightforward installation with minimal downtime. Its flexible yet stable structural design means it can be snapped into place smoothly, reducing the risk of lip damage during assembly. The low-friction coefficient of our custom PU formulation minimizes heat buildup along the rod interface during continuous cycles, directly translating to an extended operational lifespan and reduced routine maintenance intervals for your hydraulic machinery.

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
JA Dust Wiper Seal
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