Rotary Shaft Seal CORTECO 01035951 ACM BASLSFDRWX7 Oil Seal 65x83x8/10

CORTECO 01035951 ACM BASLSFDRWX7 65x83x8/10 mm - Transfer Case Radial Shaft Oil Seal Simmerring

CORTECO 01035951 ACM BASLSFDRWX7 65x83x8/10 mm is a radial shaft oil seal from the Simmerring family for specified transmission and drivetrain applications within the VAG Group. It is manufactured from ACM polyacrylate rubber and features the BASLSFDRWX7 profile, an additional dust lip and WD / Alternating Twist sealing structure. Additional CORTECO references are 01035951B and 82035951. Confirmed VAG references include 09A409400 and 099409189.

Technical data - CORTECO 01035951

What does CORTECO 01035951 ACM BASLSFDRWX7 mean?

The complete technical identification is:

CORTECO 01035951 ACM BASLSFDRWX7 65x83x8/10 mm

CORTECO - manufacturer of the sealing component.

01035951 - base CORTECO product number.

01035951B - aftermarket catalogue reference.

82035951 - additional CORTECO reference associated with this seal.

ACM - polyacrylate rubber used as the elastomer material.

BASLSFDRWX7 - exact CORTECO profile designation.

65x83x8/10 mm - complete dimensional specification.

Dimensions of CORTECO 01035951

The complete catalogue dimensions are:

65x83x8/10 mm

where:

• d = 65 mm - inside diameter
• D = 83 mm - outside diameter
• B1 = 8 mm - basic axial width
• B2 = 10 mm - overall axial dimension

The complete:

65x83x8/10 mm

designation should be retained when identifying this product.

It should not be simplified to:

65x83x8 mm

because the 10 mm dimension is part of the geometry of this specific seal construction.

ACM - polyacrylate rubber

CORTECO specifies:

ACM

for CORTECO 01035951.

ACM is a polyacrylate elastomer used in technical sealing applications, including suitable transmission and oil-system environments.

Correct seal selection should take into account:

• operating medium
• lubricant specification
• operating temperature
• shaft speed
• shaft surface condition
• lubrication conditions
• drivetrain design
• vehicle manufacturer requirements

A specific operating temperature range should not be assigned to CORTECO 01035951 solely from generic ACM material properties. Actual operating limits depend on the exact compound and operating conditions.

BASLSFDRWX7 construction

The exact CORTECO profile designation is:

BASLSFDRWX7

This designation is an important part of the technical identity of CORTECO 01035951.

For the exact 01035951B reference, product data also identifies:

• additional dust lip
• WD / Alternating Twist structure
• 8/10 mm axial geometry

When evaluating a possible replacement, the complete combination should therefore be considered:

ACM + BASLSFDRWX7 + 65x83x8/10 mm

Individual letters and numbers within BASLSFDRWX7 should not be assigned unsupported technical meanings unless explicitly defined by CORTECO for this product.

WD / Alternating Twist sealing structure

Catalogue data identifies the sealing characteristic as:

WD

while product data also describes it as:

Alternating Twist

This indicates an alternating hydrodynamic sealing structure.

This characteristic is important when selecting an equivalent because matching the basic 65x83 mm diameters alone does not confirm identical sealing geometry.

WD / Alternating Twist should also not automatically be treated as identical to a specifically right-hand or left-hand directional seal.

Additional dust lip

CORTECO 01035951B incorporates an:

additional dust lip

The auxiliary lip helps protect the primary sealing area against contamination entering from the external side.

Depending on the operating environment, this may include:

• dust
• dirt
• fine particles
• moisture
• road contamination
• other environmental contaminants

The presence of the additional dust lip should be considered when comparing CORTECO 01035951 with possible alternatives.

CORTECO 01035951 - transfer case shaft seal

Application data classifies CORTECO 01035951B as a:

transfer case shaft seal

The product is associated with specified drivetrain configurations used within the VAG Group.

Depending on the exact drivetrain assembly, application catalogues may identify different shaft or output sealing positions.

The exact installation position should therefore be confirmed using the OE reference and the specific transmission or drivetrain configuration.

CORTECO 01035951 and VAG 09A409400

One of the key confirmed OE references is:

09A409400

This reference is associated with VAG Group applications, including:

• AUDI
• SEAT
• SKODA
• VOLKSWAGEN

The reference relationship is:

CORTECO 01035951 / 01035951B

CORTECO 82035951

VAG 09A409400

This provides a useful basis for accurate product identification.

CORTECO 01035951 and VW 099409189

Another confirmed VOLKSWAGEN reference is:

099409189

The product can therefore also be identified through the relationship:

CORTECO 01035951B = VW 099409189

The OE number should still be checked together with the exact vehicle and drivetrain configuration before ordering.

AUDI, VW, SEAT and SKODA applications

Application data associates CORTECO 01035951B with selected configurations within several VAG vehicle families, including:

• AUDI A3
• AUDI TT
• AUDI TT Roadster
• SEAT Leon
• SKODA Octavia I
• VW Bora
• VW Bora Variant
• VW New Beetle

These vehicle families should not be interpreted as confirmation that the seal fits every engine, transmission or drivetrain version.

Compatibility depends on the specific drivetrain configuration.

The safest identification method is to verify:

VAG 09A409400

or:

VW 099409189

together with the CORTECO reference and complete seal specification.

Alternative designations and reference numbers

Useful identification and search variants include:

• CORTECO 01035951
• CORTECO 01035951B
• 01035951 CORTECO
• 01035951B CORTECO
• CORTECO 82035951
• CORTECO 01035951 ACM
• CORTECO 01035951 BASLSFDRWX7
• CORTECO 01035951 ACM BASLSFDRWX7
• CORTECO BASLSFDRWX7
• CORTECO BASLSFDRWX7 65x83x8/10
• CORTECO 01035951 65x83x8/10
• CORTECO 01035951B 65x83x8/10
• Simmerring 65x83x8/10
• ACM Simmerring 65x83x8/10
• ACM oil seal 65x83x8/10
• radial shaft oil seal 65x83x8/10
• transfer case seal 65x83x8/10
• transfer case oil seal 65x83x8/10
• VAG 09A409400
• VW 09A409400
• AUDI 09A409400
• SEAT 09A409400
• SKODA 09A409400
• VW 099409189

Confirmed references:

CORTECO

• 01035951
• 01035951B
• 82035951

AUDI

• 09A409400

SEAT

• 09A409400

SKODA

• 09A409400

VOLKSWAGEN

• 09A409400
• 099409189

CORTECO 01035951 vs a standard 65x83 oil seal

The basic:

65x83 mm

diameters are not sufficient to confirm interchangeability.

CORTECO 01035951 has the complete dimensions:

65x83x8/10 mm

and the specific profile:

BASLSFDRWX7

Other relevant characteristics include:

• ACM material
• 8/10 mm axial geometry
• additional dust lip
• WD / Alternating Twist sealing structure
• drivetrain application
• VAG OE references

A standard 65x83 radial shaft oil seal should therefore not automatically be considered an equivalent.

Why is the 8/10 mm dimension important?

CORTECO 01035951B is specified with two axial dimensions:

8 mm

and:

10 mm

The complete size should therefore be written as:

65x83x8/10 mm

The 10 mm value forms part of the complete geometry of this specific seal.

Reducing the product designation to 65x83x8 mm removes information that may be important when identifying the correct part or evaluating technical interchangeability.

How to select CORTECO 01035951 correctly

The safest starting point is the exact CORTECO reference:

01035951 / 01035951B

or one of the confirmed OE references:

VAG 09A409400

VW 099409189

Then verify:

1. inside diameter - 65 mm
2. outside diameter - 83 mm
3. basic axial width - 8 mm
4. overall axial dimension - 10 mm
5. ACM material
6. BASLSFDRWX7 profile
7. additional dust lip
8. WD / Alternating Twist structure
9. exact installation position

Selection and interchangeability checklist

Before ordering, verify:

• CORTECO 01035951 / 01035951B
• CORTECO 82035951
• VAG 09A409400 or VW 099409189, where applicable
• d = 65 mm
• D = 83 mm
• B1 = 8 mm
• B2 = 10 mm
• ACM material
• BASLSFDRWX7 profile
• additional dust lip
• WD / Alternating Twist structure
• exact drivetrain installation position

Matching basic dimensions do not automatically confirm full technical interchangeability.

Installation of CORTECO 01035951

Before installation, thoroughly clean the seal housing and mating shaft surface.

Inspect:

• shaft sealing surface
• wear grooves
• scratches
• burrs
• corrosion
• housing condition
• alignment
• shaft runout
• excessive play in mating components

Install the Simmerring evenly and squarely using a suitable installation tool.

Protect the primary sealing area and additional dust lip against cutting, folding or deformation during installation.

What should be checked if the transfer case seal was leaking?

If the previous seal was leaking, inspect the surrounding assembly before installing a new CORTECO 01035951.

Check:

• shaft sealing surface
• wear grooves
• shaft runout
• bearing play
• bearing condition
• alignment
• seal housing
• lubricant type and level
• drivetrain or transfer-case breather, where applicable

Replacing the seal alone may not permanently solve a leak caused by shaft wear, excessive clearance, misalignment or another mechanical fault.

FAQ - CORTECO 01035951

What are the dimensions of CORTECO 01035951?

The complete catalogue dimensions are 65x83x8/10 mm: 65 mm inside diameter, 83 mm outside diameter, 8 mm basic axial width and 10 mm overall axial dimension.

What material is CORTECO 01035951 made from?

CORTECO specifies ACM, or polyacrylate rubber.

What is the profile of CORTECO 01035951?

The exact profile designation is BASLSFDRWX7.

Does CORTECO 01035951 have an additional dust lip?

Yes. Product data for CORTECO 01035951B specifies an additional dust lip.

Is CORTECO 01035951 a directional oil seal?

The product is specified with WD / Alternating Twist sealing structure. It should not automatically be treated as equivalent to a specifically right-hand or left-hand directional seal.

Which OE numbers correspond to CORTECO 01035951?

Confirmed references include VAG 09A409400 and VW 099409189.

What is CORTECO 01035951 used for?

Application data associates it with transfer-case and drivetrain shaft sealing positions in specified AUDI, VOLKSWAGEN, SEAT and SKODA applications.

Can a standard 65x83x8 oil seal replace CORTECO 01035951?

Automatic interchangeability should not be assumed. Verify the complete 65x83x8/10 mm geometry, ACM material, BASLSFDRWX7 profile, additional dust lip, WD / Alternating Twist structure and OE reference.

CORTECO 01035951 ACM BASLSFDRWX7 65x83x8/10 mm - key information

CORTECO 01035951 is an ACM Simmerring radial shaft oil seal with BASLSFDRWX7 profile and 65x83x8/10 mm dimensions for specified VAG drivetrain applications. It features an additional dust lip and WD / Alternating Twist sealing structure. Additional CORTECO references are 01035951B and 82035951. Confirmed OE references include 09A409400 and 099409189.

Availability from simmering.pl

CORTECO 01035951 ACM BASLSFDRWX7 65x83x8/10 mm is available from simmering.pl for transmission and drivetrain specialists, repair workshops, industrial maintenance, technical procurement, distributors and B2B customers.

Products are supplied from stock in Poland, with worldwide shipping available. simmering.pl specialises in CORTECO Simmerring radial shaft seals, technical sealing solutions and bearings, with support for identification by CORTECO reference, OE number, material, profile and precise dimensions.