CORTECO 01020124 NBR B1BASL2X6 58x80x10 mm - Radial Shaft Oil Seal

Characteristics of CORTECO 01020124

CORTECO 01020124 is a radial shaft oil seal designed to limit lubricant leakage where a rotating shaft passes through a stationary housing.

The product is identified by its B1BASL2X6 construction profile, NBR sealing material and nominal dimensions of 58x80x10 mm.

It is catalogued as a differential oil seal and is associated with selected Mercedes-Benz G-Class applications.

Key product characteristics:

• Manufacturer: CORTECO.

• Manufacturer part number: 01020124.

• Additional catalogue designation: 01020124B.

• Alternative commercial reference: 82020124.

• Seal profile: B1BASL2X6.

• Sealing material: NBR.

• Nominal shaft diameter: 58 mm.

• Nominal housing bore diameter: 80 mm.

• Axial width: 10 mm.

• Construction: Radial shaft oil seal with an additional dust protection lip.

• Application category: Differential oil seal.

• Associated vehicle manufacturer: Mercedes-Benz.

• Mercedes-Benz OE references: 0079970347 and A0079970347.

The complete B1BASL2X6 designation is important when selecting a replacement.

Identical dimensions do not automatically establish interchangeability between oil seals with different construction profiles.

Technical Specifications

The exact operating temperature range, maximum shaft speed, permissible pressure, elastomer hardness and product mass should be obtained from the relevant manufacturer documentation when required for engineering selection.

What Does CORTECO 01020124 NBR B1BASL2X6 Mean?

CORTECO - Manufacturer

CORTECO is a brand within the Freudenberg Group, supplying sealing solutions and replacement components for automotive and technical applications.

CORTECO radial shaft seals are used in mechanical assemblies requiring sealing between rotating shafts and stationary housings.

01020124 - Manufacturer Part Number

01020124 identifies this specific CORTECO radial shaft oil seal.

The product is also associated with the catalogue designation 01020124B and the commercial reference 82020124.

When ordering a replacement, the complete manufacturer part number should be checked together with the seal profile, material and dimensions.

Oil seals with identical nominal dimensions may differ in sealing lip geometry, outer casing construction and operating characteristics.

NBR - Nitrile Butadiene Rubber

NBR is a synthetic elastomer widely used in radial shaft oil seals.

Its relevant properties include:

• Resistance to many mineral-based lubricating oils.

• Compatibility with numerous industrial greases.

• Elasticity suitable for dynamic contact sealing.

• Wear resistance under appropriate lubrication conditions.

• Suitability for many conventional mechanical sealing applications.

NBR is commonly used in oil-lubricated mechanical assemblies, including selected transmission and differential sealing applications.

However, NBR is not universally compatible with all synthetic lubricants, fuels, solvents or chemical substances.

Material compatibility must be verified against the actual lubricant and operating conditions.

B1BASL2X6 - Seal Construction Profile

B1BASL2X6 is the complete construction designation associated with CORTECO 01020124.

The BASL element is conventionally associated with radial shaft seals incorporating an additional dust protection lip.

For this specific product, catalogue information confirms the presence of an additional dust lip.

However, the complete B1BASL2X6 profile should not automatically be considered equivalent to a standard BASL oil seal.

The additional elements B1, 2 and X6 identify construction details that require manufacturer-specific interpretation.

Without the corresponding CORTECO technical drawing, it would be inappropriate to assign unverified meanings to these elements.

In particular:

• B1BASL2X6 is not automatically interchangeable with BASL.

• X6 should not automatically be interpreted as right-hand or left-hand directional sealing geometry.

• The number 2 should not be assumed to indicate the number of springs.

• The exact outer surface and lip geometry should be verified against the original seal.

The complete B1BASL2X6 designation should be retained when identifying and ordering CORTECO 01020124.

58x80x10 mm - Dimensional Designation

The dimensions identify:

• 58 mm - nominal shaft diameter.

• 80 mm - nominal housing bore diameter.

• 10 mm - axial seal width.

All three dimensions must correspond to the equipment's installation requirements.

The nominal shaft diameter refers to the intended shaft size rather than the free-state diameter of the elastomer sealing lip.

Construction and Operating Principle

Dynamic Radial Shaft Sealing

CORTECO 01020124 is designed to seal the interface between a rotating shaft and a stationary housing.

The primary sealing lip maintains contact with the shaft surface, helping to retain compatible lubricant within the mechanical assembly.

Effective sealing requires suitable lubrication, correct installation and an appropriate shaft surface finish.

Additional Dust Protection Lip

CORTECO 01020124 incorporates an additional dust protection lip.

Its purpose is to help reduce the entry of dust and small external contaminants into the primary sealing area.

This feature is particularly relevant in mechanical assemblies exposed to environmental contamination.

However, an additional dust lip does not automatically make the seal suitable for continuous water immersion, high-pressure washing or highly abrasive operating conditions.

Outer Sealing Surface

The outer surface of the seal is designed to fit into a housing bore with a nominal diameter of 80 mm.

Correct seating is important for both mechanical retention and limiting leakage between the seal body and the housing.

Differences in outer surface construction may affect interchangeability with other seal profiles.

For this reason, the complete B1BASL2X6 profile should be considered during replacement selection.

Shaft Surface and Sealing Performance

The effectiveness of CORTECO 01020124 depends on several operating factors:

• Shaft surface roughness.

• Shaft and housing concentricity.

• Radial shaft runout.

• Shaft surface wear or corrosion.

• Lubricant compatibility.

• Operating temperature.

• Shaft surface speed.

• Environmental contamination.

• Correct installation depth and orientation.

A new oil seal may not eliminate leakage if the shaft surface is damaged or the housing bore is unsuitable.

CORTECO B1BASL2X6 vs Standard BA and BASL Profiles

Radial shaft oil seals with identical dimensions may have different construction characteristics.

The comparison describes general differences between seal profiles and does not establish interchangeability.

CORTECO 01020124 B1BASL2X6 should not automatically be replaced with a standard 58x80x10 mm oil seal.

The complete profile, sealing material, lip construction and housing requirements must be checked.

Mercedes-Benz OEM References

The following Mercedes-Benz references are associated with CORTECO 01020124:

The full OE designation includes the leading zeros.

These references can assist with identifying the correct replacement part in Mercedes-Benz parts catalogues.

However, an OEM reference does not independently confirm compatibility with every vehicle manufactured by Mercedes-Benz.

Before ordering, verify the original part number, vehicle version, axle configuration and installation position.

Applications of CORTECO 01020124

CORTECO 01020124 is catalogued as a differential oil seal.

It is associated with selected Mercedes-Benz G-Class applications, including certain W460 and W461 variants, where catalogue references indicate use in the front axle assembly.

The precise installation position and compatibility must be confirmed using the vehicle's original equipment documentation.

Typical functions of differential radial shaft oil seals include:

• Retaining lubricant within the differential housing.

• Sealing rotating shaft interfaces.

• Limiting lubricant leakage from the axle assembly.

• Helping protect the primary sealing area against external contaminants.

These functions describe the application category of the product.

They should not be interpreted as confirmation that CORTECO 01020124 fits every Mercedes-Benz G-Class vehicle or every differential assembly.

Mercedes-Benz G-Class Compatibility

Selected Mercedes-Benz G-Class W460 and W461 variants are associated with this seal in replacement parts catalogues.

Compatibility depends on:

• Vehicle model and production version.

• Axle design.

• Installation position.

• Original Mercedes-Benz part number.

• Shaft and housing dimensions.

• Seal construction profile.

Verification by vehicle identification number (VIN) and original parts catalogue is recommended.

Selection and Interchangeability

Before purchasing CORTECO 01020124 NBR B1BASL2X6, verify the following:

1. Manufacturer part number: 01020124.

2. Additional catalogue designation: 01020124B.

3. Complete seal profile: B1BASL2X6.

4. Sealing material: NBR.

5. Nominal shaft diameter: 58 mm.

6. Nominal housing bore diameter: 80 mm.

7. Axial width: 10 mm.

8. Additional dust protection lip.

9. Outer surface construction and installation requirements.

10. Lubricant type and material compatibility.

11. Shaft and housing surface condition.

12. Original Mercedes-Benz reference and vehicle compatibility.

For Mercedes-Benz applications, matching the original equipment part number is particularly important.

Even when the nominal dimensions are identical, another seal may not provide equivalent performance if its lip geometry or outer casing construction differs.

Installation and Operating Recommendations

Correct installation is essential for reliable sealing performance.

Before installation, clean the shaft and housing bore thoroughly.

Inspect the shaft for:

• Scratches and sharp edges.

• Corrosion.

• Wear grooves left by the previous seal.

• Surface irregularities.

• Excessive radial runout.

• Misalignment.

During installation:

• Use a suitable seal installation tool.

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

• Avoid direct impact on the sealing lips.

• Protect the lips when passing over threads, keyways or sharp edges.

• Maintain correct alignment with the housing bore.

• Install the seal to the specified depth.

• Provide appropriate lubrication of the primary sealing lip.

• Confirm the correct orientation relative to the sealed medium.

• Follow the equipment manufacturer's installation requirements.

For conventional oil-retaining applications, the primary sealing lip normally faces the lubricant being retained, while the additional dust lip faces the external environment.

Always follow the equipment manufacturer's instructions where a different installation arrangement is specified.

Storage

Store unused NBR oil seals in a clean, dry environment away from direct sunlight, excessive heat, ozone and chemicals that may affect elastomer properties.

Avoid deformation of the sealing lips during storage.

Alternative Designations and Reference Numbers

The product may also be identified using the following descriptions:

• CORTECO 01020124

• CORTECO 01020124B

• CORTECO 82020124

• 01020124 CORTECO

• CORTECO B1BASL2X6 58x80x10

• CORTECO 58x80x10 NBR

• CORTECO 01020124 differential oil seal

• CORTECO 01020124 rotary shaft seal

• CORTECO 01020124 Simmerring

• Mercedes-Benz differential oil seal 58x80x10

• Mercedes-Benz front axle oil seal

Associated Mercedes-Benz reference numbers:

• 0079970347.

• A0079970347.

These references are provided for part identification. Final application compatibility should be verified against the original equipment catalogue.

FAQ - CORTECO 01020124

1. What are the dimensions of CORTECO 01020124?

The seal is designed for a nominal shaft diameter of 58 mm, housing bore diameter of 80 mm and axial width of 10 mm. Its full dimensional designation is 58x80x10 mm.

2. What does B1BASL2X6 mean on CORTECO 01020124?

B1BASL2X6 identifies the specific seal construction profile. The product includes an additional dust protection lip. The exact meanings of the B1, 2 and X6 elements require manufacturer-specific technical documentation.

3. What material is CORTECO 01020124 made from?

The sealing material is NBR, or nitrile butadiene rubber, commonly used in oil sealing applications involving compatible lubricants.

4. Does CORTECO 01020124 have a dust lip?

Yes. Catalogue information identifies an additional dust protection lip, designed to help limit the entry of external contaminants into the primary sealing area.

5. Is CORTECO 01020124 a differential oil seal?

Yes. The product is catalogued as a differential oil seal and is associated with selected Mercedes-Benz axle applications.

6. What Mercedes-Benz OE numbers correspond to CORTECO 01020124?

Associated references include 0079970347 and A0079970347. The shorter reference 79970347 is also supplied for identification.

7. Does CORTECO 01020124 fit the Mercedes-Benz G-Class?

The product is associated with selected Mercedes-Benz G-Class W460 and W461 applications. Compatibility must be confirmed using the original part number, axle configuration and specific vehicle details.

8. Can CORTECO 01020124 be replaced with any 58x80x10 mm oil seal?

No. The replacement must be checked for the correct B1BASL2X6 profile, NBR material, dust lip construction and installation requirements. Matching dimensions alone does not guarantee interchangeability.

CORTECO 01020124 - Key Technical Information

CORTECO 01020124 NBR B1BASL2X6 is a radial shaft oil seal with dimensions of 58x80x10 mm, manufactured under the CORTECO brand. Made from nitrile butadiene rubber, it features an additional dust protection lip and is catalogued for differential sealing applications. Associated Mercedes-Benz OE references include 0079970347 and A0079970347. Correct selection requires verification of the complete B1BASL2X6 profile.

CORTECO 01020124 is available from simmering.pl, a specialist supplier of industrial oil seals, rotary shaft seals and rolling bearings.

With warehouse operations in Lublin, Poland, simmering.pl supplies engineering businesses, industrial maintenance departments and international B2B customers, with worldwide shipping options.