CORTECO 12011508 NBR B1KL 45x59.13x10 mm - Front Wheel Hub Oil Seal

CORTECO 12011508 - Technical Specifications

The nominal outside diameter of 59.13 mm is particularly important. It must not be automatically rounded to 59 mm or 60 mm when selecting a replacement seal.

CORTECO 12011508 Applications - FSO Polonez, Fiat 132 and Other Vehicle Brands

CORTECO 12011508 is identified in automotive replacement parts catalogs as a wheel hub oil seal.

FSO Polonez - Front Wheel Hub

Polish automotive parts catalogs list CORTECO 12011508B as a:

Front wheel hub oil seal for the FSO Polonez.

This application is particularly relevant when repairing, servicing or restoring FSO Polonez vehicles.

Before ordering, compare the dimensions of the original seal and verify the hub configuration. The Polonez model name alone does not establish compatibility with every production version.

FIAT 132

Automotive catalogs also associate this seal with selected FIAT 132 applications.

Examples of catalog-listed applications include:

Compatibility should be confirmed using the OE reference, wheel hub construction and vehicle-specific parts documentation.

AUTOBIANCHI, FIAT, IVECO and ZASTAVA

Replacement parts catalogs associate these vehicle brands with the common OE reference 4117608.

This does not mean that CORTECO 12011508 fits every vehicle manufactured by these brands.

The OE number must be checked against the specific vehicle model, production version and mechanical assembly.

CORTECO 12011508 - OE Numbers and Cross-References

4117608 is the associated OE reference, while 12011508B is an alternative CORTECO catalog designation.

Other replacement parts references associated with this application include SKF ANT159 and SKF ATN159. Before treating these references as interchangeable, verify the current manufacturer designation, dimensions and technical compatibility.

Cross-reference listings are identification aids and do not independently guarantee suitability for every vehicle.

What Does CORTECO 12011508 NBR B1KL Mean?

CORTECO - Manufacturer

CORTECO is a supplier of automotive sealing components and related replacement parts.

12011508 - Manufacturer Part Number

12011508 identifies the specific CORTECO product.

When ordering, the complete manufacturer part number should be used whenever possible.

12011508B - Alternative Catalog Designation

The reference 12011508B is associated with this seal in automotive parts catalogs and distributor listings.

It should be checked against the supplier's current product reference.

45x59.13x10 mm - Seal Dimensions

The dimensions indicate:

• 45 mm - nominal shaft or sealing surface diameter.

• 59.13 mm - nominal housing bore diameter.

• 10 mm - nominal axial width.

These dimensions are essential for identifying the correct wheel hub seal.

NBR - Nitrile Rubber

NBR stands for acrylonitrile-butadiene rubber, commonly known as nitrile rubber.

It is widely used in oil seals because appropriately selected NBR compounds offer good resistance to many mineral oils and lubricating greases.

B1KL - Seal Profile

B1KL identifies the seal's construction profile.

The complete profile designation should be retained when searching for an equivalent part.

Without the manufacturer-specific technical drawing, individual letters should not be assigned unverified meanings relating to lip geometry, casing construction, spring design or directional sealing features.

CORTECO 12011508 - Construction and Function

CORTECO 12011508 is a radial sealing component used to control lubricant migration in a suitably designed wheel hub assembly.

The sealing element operates against a rotating surface while the seal body is installed in the housing.

In a wheel hub application, the seal helps retain lubricant within the assembly and limit the entry of external contaminants.

Its effectiveness depends on:

• Correct shaft and housing dimensions.

• Suitable sealing surface condition.

• Proper installation depth and alignment.

• Compatible lubricant.

• Correct seal orientation.

• Operating temperature and rotational speed.

• The required B1KL profile construction.

The oil seal does not function as a bearing and does not support wheel loads.

NBR Material - Technical Properties

NBR is an elastomer commonly used in mechanical sealing applications.

Depending on the specific compound formulation, its typical properties include:

• Good resistance to many mineral-based oils.

• Compatibility with numerous industrial lubricating greases.

• Elasticity suitable for dynamic sealing.

• Mechanical properties appropriate for many oil-lubricated and grease-lubricated assemblies.

However, NBR is not universally compatible with all chemicals, fuels or hydraulic fluids.

The exact temperature range, chemical resistance and permissible operating speed depend on the particular compound and seal design.

These limits should not be inferred from the NBR designation alone.

Why Is the 59.13 mm Outside Diameter Important?

The nominal outside diameter of CORTECO 12011508 is 59.13 mm.

This differs from standard nominal dimensions of 59 mm and 60 mm.

When selecting a wheel hub seal, verify:

• Housing bore diameter.

• Required installation depth.

• Condition of the housing bore.

• Original seal dimensions.

• B1KL profile.

• OE reference 4117608, where applicable.

A seal with a similar but different outside diameter may not provide the correct interference fit.

The value of 59.13 mm is a nominal dimension and does not define the manufacturing tolerance.

Alternative Designations and Reference Numbers

This product may be identified using the following catalog descriptions:

• CORTECO 12011508

• CORTECO 12011508B

• 12011508B CORTECO

• CORTECO B1KL Simmerring

• CORTECO 45x59.13x10 NBR

• FSO Polonez front wheel hub oil seal

• Fiat 132 wheel hub oil seal 45x59.13x10

• Radial shaft oil seal 45x59.13x10

• Oil seal OE 4117608

Searching by the complete manufacturer part number or OE reference is generally more precise than searching by vehicle model alone.

CORTECO 12011508 vs Other Oil Seal Variants

A replacement oil seal must be evaluated by more than its nominal inner diameter.

Identical dimensions do not necessarily establish complete interchangeability.

Two seals may have matching dimensions but different sealing lip configurations, materials or operating characteristics.

Selection and Interchangeability Checklist

Before ordering CORTECO 12011508, verify:

1. Manufacturer part number 12011508.

2. Alternative catalog reference 12011508B, if used.

3. OE number 4117608, where specified.

4. Nominal inner diameter of 45 mm.

5. Nominal outer diameter of 59.13 mm.

6. Nominal width of 10 mm.

7. NBR sealing material.

8. B1KL profile.

9. Installation position in the vehicle.

10. Condition of the hub housing and sealing surface.

11. Compatibility with the lubricant.

12. Vehicle model and wheel hub version.

For older vehicles, particularly those that have undergone repairs or modifications, comparison with the removed original component is strongly recommended.

Installation and Maintenance

Before installing the seal:

• Clean the housing bore thoroughly.

• Inspect the shaft or mating sealing surface for wear and damage.

• Confirm the correct housing dimensions.

• Protect the sealing lip from sharp edges.

• Use a suitable installation tool.

• Apply installation force evenly to the appropriate seal body surface.

• Avoid direct impact on the sealing lip.

• Prevent tilting or distortion during installation.

• Follow the required installation orientation.

• Use lubrication appropriate for the wheel hub assembly.

A damaged or permanently deformed seal should not be reused.

Frequently Asked Questions

Does CORTECO 12011508 fit the FSO Polonez?

Polish automotive parts catalogs list this seal for the front wheel hub of the FSO Polonez. Compatibility must be confirmed for the specific hub version and original seal dimensions.

Is CORTECO 12011508 suitable for the Fiat 132?

Catalog listings associate this seal with selected Fiat 132 2.0 D and 2.5 D versions. Check the OE reference and the vehicle's wheel hub configuration before installation.

What is the OE number for CORTECO 12011508?

The associated OE reference is 4117608, listed in replacement parts catalogs under AUTOBIANCHI, FIAT, IVECO and ZASTAVA.

Are CORTECO 12011508 and 12011508B the same product?

Both references are associated in distributor catalogs with the NBR B1KL seal measuring 45x59.13x10 mm. Confirm the current supplier reference before ordering.

What are the dimensions of CORTECO 12011508?

The nominal inner diameter is 45 mm, the outer diameter is 59.13 mm and the width is 10 mm.

Can a 45x60x10 mm oil seal replace CORTECO 12011508?

Not without technical verification. The outside diameter differs from the specified 59.13 mm and may prevent correct installation or sealing.

What material is used in CORTECO 12011508?

The sealing material is NBR nitrile rubber, commonly used in applications involving compatible oils and lubricating greases.

Does OE number 4117608 mean the seal fits every FIAT or IVECO vehicle?

No. The OE number identifies a part reference, not universal vehicle compatibility. The exact model, production version and assembly must be checked.

CORTECO 12011508 - Quick Technical Answer

CORTECO 12011508, also listed as 12011508B, is an NBR radial oil seal with a B1KL profile and dimensions of 45x59.13x10 mm. Automotive catalogs associate it with the FSO Polonez front wheel hub and selected Fiat 132 applications. The related OE number is 4117608. Correct identification requires particular attention to the 59.13 mm outside diameter.

About CORTECO

CORTECO is an automotive aftermarket brand associated with the Freudenberg Group, supplying sealing solutions and other automotive replacement components.

Manufacturer information: CORTECO.

Manufacturer Information (GPSR)

Responsible manufacturer: Corteco GmbH

Address: Badener Str. 4, 69493 Hirschberg, Germany

Email: service@corteco.de

CORTECO Oil Seals at simmering.pl

simmering.pl supplies CORTECO rotary shaft oil seals, industrial sealing components, bearings and technical replacement parts.

For identification of CORTECO 12011508, customers can provide the OE reference 4117608, vehicle model and installation position.

Our warehouse is located in Lublin, Poland. We supply customers throughout Poland, the European Union and international markets.