CORTECO® 01016893B BAFSFX2 Oil Seal | Simmerring 24x39x8.5 mm | HNBR | ZF 7891033105

What is the CORTECO 01016893B Oil Seal?

The CORTECO 01016893B BAFSFX2 is a premium radial shaft oil seal (Simmerring) manufactured from HNBR (Hydrogenated Nitrile Butadiene Rubber). Designed for demanding automotive and industrial applications, it provides reliable sealing performance in systems exposed to elevated temperatures, hydraulic fluids, lubricants and continuous mechanical loads.

This seal is primarily used in ZF steering gears and power steering assemblies, where long service life and OEM-quality sealing performance are essential.

Technical Specifications

HNBR Material Advantages

HNBR is an advanced elastomer developed for sealing applications requiring greater durability than conventional NBR rubber.

Key benefits include:

• Excellent resistance to mineral oils and lubricants
• High thermal stability
• Outstanding resistance to oxidation and ageing
• Excellent ozone and weather resistance
• High mechanical strength
• Good abrasion resistance
• Long operating life
• Reliable sealing under demanding conditions

Material compatibility should always be verified according to the operating fluid, pressure, shaft speed and temperature.

BAFSFX2 Seal Design

The BAFSFX2 sealing profile has been engineered for demanding rotary shaft applications requiring long-term reliability.

Its design provides:

• Excellent lubricant retention
• Effective protection against dirt and contaminants
• Stable sealing at varying operating temperatures
• Reliable shaft contact
• Reduced leakage risk
• Long-term operational stability

Proper installation and shaft surface condition are essential for optimum sealing performance.

Typical Applications

The CORTECO 01016893B 24x39x8.5 mm HNBR oil seal is commonly used in:

• ZF steering gears
• Hydraulic steering systems
• Steering racks
• Automotive repair
• OEM steering assemblies
• Hydraulic equipment
• Industrial machinery
• Rotary shaft sealing systems
• Maintenance operations
• Professional steering gear rebuilding

Application in ZF Steering Systems

The ZF OE number 7891033105 identifies this oil seal for compatible steering gear applications.

Before installation, always verify:

• CORTECO part number
• ZF OE reference
• Seal dimensions
• BAFSFX2 profile
• HNBR material
• Shaft diameter
• Housing bore
• Installation direction
• Shaft surface condition

Matching both the dimensions and the OE reference helps ensure proper fit and reliable sealing performance.

Why Choose CORTECO?

CORTECO, a member of the Freudenberg Group, is one of the world's leading manufacturers of automotive and industrial sealing technology.

The CORTECO 01016893B offers:

• OEM-quality manufacturing
• Precision-engineered dimensions
• Durable HNBR sealing material
• Proven BAFSFX2 sealing design
• Compatibility with ZF steering applications
• Reliable long-term performance

FAQ

What are the dimensions of the seal?

The oil seal measures 24 mm inner diameter, 39 mm outer diameter and 8.5 mm width.

What material is used?

The seal is manufactured from HNBR (Hydrogenated Nitrile Butadiene Rubber).

What does BAFSFX2 mean?

BAFSFX2 is CORTECO's designation for this specific radial shaft seal profile and lip configuration.

Which OE number does it replace?

It corresponds to ZF OE number 7891033105.

Is this suitable for steering gear applications?

Yes. It is primarily intended for compatible ZF steering gear and hydraulic steering systems.

Can seals with identical dimensions have different designs?

Yes. Lip geometry, spring configuration, materials and sealing profiles may differ even when dimensions are identical.

Why is HNBR preferred over standard NBR?

HNBR offers significantly improved resistance to heat, oxidation, ageing and mechanical stress.

What should be checked before installation?

Verify the shaft condition, housing bore, lubrication, installation direction, dimensions and OE reference.

Frequently Asked Questions from Mechanics and Engineers

Is this oil seal suitable for steering rack rebuilding?

Yes, provided the steering gear requires CORTECO 01016893B / ZF 7891033105 and the dimensions match the original seal.

Can a standard NBR seal replace this HNBR version?

Only if permitted by the equipment manufacturer. HNBR is often specified because of its superior thermal and mechanical performance.

Why is the 39 mm outside diameter critical?

The housing bore is designed specifically for this dimension, ensuring the required interference fit and sealing performance.

Should the sealing lip be lubricated before installation?

Yes. Unless otherwise specified by the manufacturer, applying suitable assembly lubricant helps prevent dry-running damage during initial operation.

What are the most common causes of premature oil seal failure?

• Incorrect installation
• Damaged shaft surface
• Contamination
• Insufficient lubrication
• Excessive operating pressure
• Shaft misalignment
• Incorrect material selection
• Damaged sealing lip during assembly