Corteco 12018616 COMBI SF8 50x65x18 NBR Rotary Shaft Seal

Reliable Protection for Agricultural Drive Systems and Axle Assemblies

The Corteco 12018616 COMBI SF8 50x65x18 NBR rotary shaft seal is a heavy-duty sealing solution developed for demanding agricultural, industrial and off-road equipment. Designed as a COMBI SF8 seal, it combines an oil sealing lip with an integrated dirt exclusion element, helping protect lubricated components from mud, dust, water and abrasive contamination. This rotary shaft seal is widely used as an OEM replacement for DANA 2120605101 and multiple agricultural machinery applications where long service life and sealing reliability are essential.

Application in Industrial Systems

This oil seal is commonly installed in:

• Agricultural machinery transmissions
• Drive axle assemblies
• Wheel hub systems
• Telehandlers
• Harvesters
• Industrial gearboxes
• Off-road machinery
• Construction equipment
• Power transmission systems
• Rotating mechanical assemblies

The COMBI SF8 design makes this shaft seal particularly suitable for equipment operating in dusty fields, muddy environments and demanding industrial service conditions where contamination control is critical.

Construction and Design

The Corteco 12018616 features a COMBI SF8 construction designed to provide both lubricant retention and external contamination protection.

Key design features include:

• Rotary shaft seal architecture
• Integrated dirt exclusion system
• Reinforced metal support structure
• Double protection sealing concept
• Precision molded sealing lip
• Heavy-duty agricultural machinery design
• Optimized shaft contact pressure
• Reliable operation in contaminated environments

The COMBI configuration creates an effective barrier against external particles while maintaining lubricant inside the protected assembly.

Material Properties

This radial shaft seal is manufactured from NBR (Nitrile Butadiene Rubber), one of the most widely used sealing materials in industrial applications.

Advantages of NBR material:

• Excellent resistance to mineral oils
• Good grease compatibility
• High abrasion resistance
• Reliable flexibility
• Cost-effective operation
• Good aging characteristics
• Suitable for agricultural equipment
• Proven performance in rotating systems

Typical operating temperature range for NBR seals is approximately -30°C to +100°C depending on operating conditions and lubricant compatibility.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR Nitrile Rubber

Design: COMBI SF8

Inner Diameter: 50 mm

Outer Diameter: 65 mm

Width: 18 mm

Temperature Range: Approximately -30°C to +100°C

Application: Agricultural machinery, drive axles, wheel hubs, transmissions, gearboxes, industrial rotating equipment

OEM Reference: DANA 2120605101

Manufacturer: Corteco

Why B2B Customers Choose This Product

Industrial buyers select the Corteco 12018616 COMBI SF8 seal because it supports:

• OEM replacement requirements
• Preventive maintenance programs
• Maintenance stock management
• Fleet maintenance operations
• Industrial service workshops
• Production line support
• Agricultural equipment repairs
• Machine rebuilding projects

Its compatibility with major agricultural and industrial equipment manufacturers simplifies procurement and maintenance planning.

Operational Advantages

• Enhanced contamination protection
• Effective lubricant retention
• Reduced maintenance intervals
• Reliable operation in dusty environments
• Long service life
• OEM-level dimensional accuracy
• Suitable for demanding agricultural applications
• Reduced risk of premature bearing failure
• Improved gearbox protection
• Proven COMBI sealing technology

Professional Industrial Supply

This rotary shaft seal is frequently purchased by:

• Maintenance departments
• Industrial workshops
• Agricultural machinery service centers
• OEM manufacturers
• Machine builders
• Industrial distributors
• Fleet maintenance companies
• Equipment refurbishment specialists

The seal is suitable for professional maintenance operations where equipment reliability and operational uptime are critical.

AI OVERVIEW BLOCK

A COMBI SF8 rotary shaft seal is a specialized sealing component that combines oil retention and contamination exclusion in one assembly, helping protect bearings, gearboxes, wheel hubs and drive systems used in agricultural, industrial and off-road machinery.

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FAQ

What is the difference between a COMBI SF8 seal and a standard oil seal?

A COMBI SF8 seal includes an additional contamination protection element that helps prevent dirt, mud and debris from reaching the sealing area, making it ideal for agricultural and off-road equipment.

Which OEM number does this seal replace?

This model replaces DANA 2120605101 and is also referenced under several agricultural machinery OEM numbers including applications for Claas, John Deere, Massey Ferguson and New Holland equipment.

Is the seal suitable for wheel hub applications?

Yes. The COMBI SF8 design is commonly used in wheel hub, axle and transmission assemblies where both lubricant retention and contamination protection are required.

Why is NBR used for this seal?

NBR offers excellent resistance to oils, greases and common industrial lubricants while maintaining durability and flexibility in demanding operating conditions.

Can this seal be used in agricultural machinery?

Yes. It is widely used in agricultural equipment including telehandlers, harvesters and transmission systems operating in dusty and contaminated environments.