Sealing Excellence, Securing Industry

CFKS Combi Oil Seal Multi Lip Hub Oil Seal For Agricultural Machinery Combi Shaft Seal

  • The CFKS Combi Oil Seal delivers heavy-duty rotary sealing engineered specifically for high-contamination agricultural equipment. Combining an integrated axial seal lip with a secondary elastomer mud scraper, it blocks abrasive dust, water, and debris before they reach primary critical components.

    • Multi-Lip Dirt Rejection: Engineered with multiple protective barrier lips to seal out slurry, dirt, and crop fibers.

    • Low-Friction Operation: Optimized elastomer lip geometry minimizes shaft wear and running drag while preserving lubricant.

    • Axial Centrifugal Shielding: Integrated rotating seal ring uses centrifugal force to sling heavy contaminants away from the seal interface.

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

Product Name CFKS Combi Oil Seal Specification Standard / Custom Available
Material NBR / FKM / PU Feature High Pressure & Wear Resistant
Work Temperature -20℃ to 220℃ Usage Wheel Hubs, Axles, Gearboxes, Harvesters, Tractors
Hardness 70 – 90 Shore A Type Multi-Lip Rotary Seal

 

 

The CFKS Combi Shaft Seal utilizes an integrated axial sealing principle to provide robust, multi-stage barrier protection in high-contaminant environments. Unlike standard radial shaft seals that rely solely on continuous radial contact pressure, this axial-assisted rotary architecture combines primary radial lips with an integrated elastomeric axial ring. As the shaft rotates, the axial seal element generates centrifugal force, slinging mud, slurry, and grit outward before foreign particles can penetrate the primary sealing zone. This continuous slinging dynamic reduces mechanical abrasion on the precision seal lip, keeping oil film lubrication intact and preventing premature shaft grooving under heavy agricultural workloads.

 

Long-term sealing efficacy depends entirely on material resilience against harsh fluid media and extreme environmental exposure. CFKS Combi Seals are produced using premium NBR or  FKM, tailored to exact operating parameters. NBR formulations provide superior wear resistance, high tear strength, and excellent compatibility with standard petroleum-based gear oils and mineral greases. For high-speed applications or severe thermal loads, FKM compounds maintain structural elastomeric flexibility up to 220°C while offering exceptional immunity to aggressive synthetic lubricants and environmental ozone degradation. Both compound options resist material swelling and cracking under severe field conditions.

Engineered for straightforward field servicing, the CFKS Combi Oil Seal simplifies drivetrain maintenance while extending overall service intervals. The self-contained unit allows for streamlined press-fit mounting into housing bores without requiring specialized teardown tools or complete shaft disassembly. During routine equipment inspections, the integrated mud scraper design drastically minimizes abrasive wear, reducing total cost of ownership. Proper pre-lubrication of the seal lips during initial press-fit installation ensures immediate hydrodynamic fluid film formation, preventing dry-running damage and ensuring immediate, leak-free operational reliability across demanding harvesting cycles.

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
CASSETTE Oil Seal Size List
SIZEMaterialTYPE
35*52*16NBR+AUCOMBI
35*52*17/18.5NBR+AUCOMBI SF
40*55*15.5NBR+AUCOMBI SF6
37*52*14.6NBR+AUCOMBI SF6
42*62*17NBR+AUCOMBI SF1
45*60*16/17NBR+AUCOMBI SF
45*62*19NBR+AUCOMBI SF20
45*65*18.5NBR+AUCOMBI SF6
60*75*17.5/18.5NBRCOMBI
55*80*11NBR+AUCOMBI
56*80*13/14.5NBRRWDR-KASSETTE
50*65*18NBR+AUCOMBI SF8
46*65*21NBR+AURWDR-COMBI
65*92*10/15NBR+VITONRWDR-CASSETTE
75*100*13/14.5NBRRWDR-CASSETTE-2
85*110*13/14.5NBR+VITONRWDR-CASSETTE-3
127*160*15.5/17.5NBRRWDR-CASSETTE-3
130*160*14.5/16NBRRWDR-CASSETTE-3
140*170*14.5/16NBRRWDR-KASSETTE-2
145*189*15.5/17NBRCASSETTE
120*160*15/17.5NBRRWDR-K7 KASSETTE
121.8*150*13/15NBRRWDR-K7 KASSETTE
145*175*14.5/15.5NBRRWDR-K7 KASSETTE
165*190*15.5/17NBRRWDR-CASSETTE-2
210*240*14.5/18NBRRWDR-CASSETTE-3
167.8*198*13/15.5NBRRWDR-CASSETTE-3
190*215*15.5/17NBRRWDR-CASSETTE-2
150*180*14.5/16NBR+VITONRWDR-CASSETTE-2
189.8*230*15.5/17NBRCASSETTE-S3
170*200*15/16NBR+VITONRWDR-K7
120*150*14/15.5NBRKASSETTE
130*155*12.5/16NBRKASSETTE
190*220*16/18NBRRWDR-KASSETTE
147*170*15.5/16NBRKASSETTE
110*140*14.5/16NBRRWDR-KASSETTE
32*51*9 NBRGNB1W11

 

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