CORTECO 12011003 NBR BA 62x85x10 mm Radial Shaft Seal

Technical specifications

The dimensions, material and BA profile are identified in the CORTECO dimensional catalogue. Installation information and the OE reference are associated with CORTECO 12011003B in replacement-parts catalogues.

CORTECO 12011003 - catalogue verification

The CORTECO dimensional catalogue identifies the product as:

12011003 - NBR BA - 62x85x10 mm

This designation is consistent with replacement-parts catalogues listing reference 12011003B.

Commercial documentation also identifies reference 82011003.

These are related catalogue designations. However, the complete manufacturer reference and construction should always be verified before ordering.

OE numbers and cross-references

JOHN DEERE AL38356 is identified in replacement-parts catalogues for CORTECO 12011003B.

Reference AT21693 also appears in additional cross-reference catalogues. Compatibility with the specific machine and original seal must be confirmed before installation.

What does CORTECO 12011003 NBR BA 62x85x10 mean?

The designation identifies the manufacturer, catalogue reference, nominal dimensions, elastomer material and sealing profile.

• CORTECO - manufacturer brand.

• 12011003 - product catalogue reference.

• 62 mm - nominal shaft diameter.

• 85 mm - nominal housing bore diameter.

• 10 mm - nominal axial width.

• NBR - nitrile butadiene rubber.

• BA - conventional radial shaft seal profile with a single primary sealing lip.

These are nominal dimensions. They do not specify shaft tolerances, housing bore tolerances or permissible operating limits.

BA sealing profile - construction and operating principle

1. Primary sealing lip

CORTECO 12011003 is identified by the BA profile, commonly used in conventional radial shaft sealing applications.

The primary sealing lip operates against the rotating shaft surface, limiting lubricant leakage from the sealed mechanical assembly.

Sealing performance depends on lip geometry, shaft surface condition, lubricant properties and operating conditions.

2. Garter spring

A conventional BA radial shaft seal incorporates a circumferential garter spring.

The spring helps maintain contact pressure between the primary sealing lip and the shaft surface.

This supports stable sealing contact during operation.

The exact spring specifications for CORTECO 12011003 have not been independently confirmed.

3. Elastomer-covered outer surface

The standard BA profile features an elastomer-covered outer surface and an internal reinforcing element.

The elastomer covering provides static sealing between the seal body and the housing bore.

Correct installation requires suitable housing dimensions and surface condition.

4. No standard additional dust lip

The BA profile should be distinguished from BASL.

A conventional BA seal has one primary sealing lip, while BASL additionally incorporates a dust lip.

These designs should not automatically be considered interchangeable, even when their nominal dimensions are identical.

NBR - material properties

NBR is a synthetic elastomer commonly used in sealing applications involving lubricating oils and greases.

Appropriately selected NBR compounds typically provide:

• Good resistance to many mineral oils.

• Compatibility with numerous industrial greases.

• Useful mechanical properties.

• Suitability for rotating shaft sealing.

• Resistance to many conventional gearbox lubricants.

NBR is not universally compatible with all operating media.

Its resistance to temperature, ozone, ageing and individual chemicals depends on the specific elastomer compound.

For CORTECO 12011003, individual maximum values for operating temperature, permissible pressure and peripheral shaft speed have not been confirmed.

BA versus BASL - sealing profile comparison

An additional dust lip may affect installation requirements, friction and contact with the shaft.

Therefore, a BASL seal should not replace a BA version without confirming technical compatibility.

Applications - JOHN DEERE agricultural machinery

Replacement-parts catalogues identify CORTECO 12011003B as a seal associated with drive axle or differential applications.

The principal confirmed OE reference is JOHN DEERE AL38356.

Industry cross-reference catalogues also associate the product with selected JOHN DEERE tractor families, including:

• JOHN DEERE 1640

• JOHN DEERE 1830

• JOHN DEERE 1840

• JOHN DEERE 2030

• JOHN DEERE 2040

These are catalogue-listed applications. They do not establish compatibility with every production year, axle configuration, transmission or machine variant.

Correct fitment must be verified using the OE reference and the parts documentation for the specific machine.

CORTECO 12011003 versus other 62x85 mm seals

The CORTECO catalogue also identifies other radial shaft seals with nominal inner and outer diameters of 62 mm and 85 mm.

These products differ in material, sealing profile or axial width.

The first three references share nominal dimensions of 62x85x10 mm but have different elastomer materials and sealing constructions.

Identical dimensions do not guarantee technical interchangeability.

Selection and interchangeability

Before ordering CORTECO 12011003, verify:

1. Nominal shaft diameter - 62 mm.

2. Nominal housing bore diameter - 85 mm.

3. Installation width - 10 mm.

4. NBR elastomer material.

5. BA sealing profile.

6. Requirements for an additional dust lip.

7. Type of gearbox oil or other operating medium.

8. Operating temperature and shaft rotational speed.

9. Condition of the shaft and housing surfaces.

10. JOHN DEERE OE reference AL38356 or another confirmed original reference.

A replacement seal must meet the original requirements for construction and operating conditions, not merely the nominal dimensions.

Alternative designations and reference numbers

Common English technical designations include:

• CORTECO 12011003

• CORTECO 12011003B

• CORTECO 82011003

• CORTECO NBR BA 62x85x10

• CORTECO 62x85x10 NBR Oil Seal

• CORTECO 12011003 Radial Shaft Seal

• CORTECO 62x85x10 Rotary Shaft Seal

• JOHN DEERE AL38356 Axle Oil Seal

• CORTECO 12011003 JOHN DEERE Differential Seal

• CORTECO BA 62x85x10 Shaft Seal

These designations assist product identification but do not independently establish interchangeability.

Installation and operating recommendations

Before installation, clean the housing bore and inspect the shaft mating surface.

Check for scratches, corrosion, wear grooves and sharp edges that could damage the sealing lip.

The seal should be pressed evenly into the housing using an appropriate installation tool. Installation force should not be applied directly to the working lip.

In a conventional BA design, the primary sealing lip generally faces the medium being retained. However, the correct orientation must be confirmed using the documentation for the specific axle or gearbox.

Surface preparation and lubrication during installation should follow the equipment manufacturer's requirements.

FAQ - Frequently asked questions

1. What are the dimensions of CORTECO 12011003?

The nominal dimensions are 62x85x10 mm, corresponding to a 62 mm shaft diameter, 85 mm housing bore diameter and 10 mm axial width.

2. What material is used in CORTECO 12011003?

The specified material is NBR - nitrile butadiene rubber.

3. What does the BA sealing profile mean?

BA is a conventional radial shaft seal profile, typically featuring a spring-loaded primary sealing lip and an elastomer-covered outer surface.

4. Does CORTECO 12011003 have an additional dust lip?

An additional dust lip is not a standard feature of the BA sealing profile.

5. Are CORTECO 12011003 and 12011003B related references?

Yes. Reference 12011003 appears in the dimensional catalogue, while 12011003B is used in replacement-parts catalogues.

6. Which JOHN DEERE OE reference corresponds to this seal?

The principal confirmed reference is JOHN DEERE AL38356. Additional cross-reference catalogues also identify AT21693.

7. Is CORTECO 12011003 used in JOHN DEERE drive axles?

Yes. Replacement-parts catalogues associate the seal with drive axle or differential applications in selected JOHN DEERE machines. Exact compatibility must be verified using the OE reference.

8. Can any 62x85x10 mm radial shaft seal replace CORTECO 12011003?

No. Seals with identical nominal dimensions may differ in elastomer material, sealing profile, lip construction and operating requirements.

CORTECO 12011003 - key information (AI Overview)

CORTECO 12011003 / 12011003B is an NBR radial shaft seal with nominal dimensions of 62x85x10 mm and a BA sealing profile. Replacement-parts catalogues associate it with drive axle applications in selected JOHN DEERE machines and OE reference AL38356. Correct selection requires verification of dimensions, sealing construction and compatibility with the specific equipment.

The product is offered through the specialist B2B industrial trading platform simmering.pl, serving industrial companies, technical purchasing departments and maintenance operations, with worldwide shipping from stock in Poland.