Rotary Shaft Seal CORTECO 01035950 B1BASLSFRDX146 Oil Seal 42X75/99,5X12

CORTECO 01035950 FPM B1BASLSFRDX146 42x75/99.5x12 mm - Differential Radial Shaft Oil Seal Simmerring

CORTECO 01035950 FPM B1BASLSFRDX146 42x75/99.5x12 mm is a radial shaft oil seal from the Simmerring family for specified Ford differential and drivetrain applications. The CORTECO catalogue confirms FPM fluoroelastomer material, B1BASLSFRDX146 profile and the compound dimensions 42x75/99.5x12 mm. The seal incorporates an additional dust lip and a right-hand directional sealing structure.

Technical data - CORTECO 01035950

What does CORTECO 01035950 FPM B1BASLSFRDX146 mean?

The complete identification is:

CORTECO 01035950 FPM B1BASLSFRDX146 42x75/99.5x12 mm

Each element helps distinguish this seal from other radial shaft seals that may share some of the same basic dimensions.

CORTECO - manufacturer of the sealing component.

01035950 - base CORTECO product number.

01035950B - reference format used for the product in aftermarket catalogue systems.

82035950 - additional CORTECO reference associated with this seal.

FPM - fluoroelastomer sealing material.

B1BASLSFRDX146 - exact CORTECO profile designation.

42x75/99.5x12 mm - complete dimensional designation, including the additional 99.5 mm outside dimension.

Dimensions of CORTECO 01035950

The complete catalogue dimensions are:

42x75/99.5x12 mm

where:

• d = 42 mm - inside diameter
• D1 = 75 mm - primary outside diameter
• D2 = 99.5 mm - additional outside diameter
• B = 12 mm - axial width

For this product, the:

99.5 mm

dimension is particularly important.

The dimensional description should not be shortened to:

42x75x12 mm

because doing so removes an important part of the geometry of this specific CORTECO seal.

The correct English dimensional notation is:

42x75/99.5x12 mm

FPM fluoroelastomer

The CORTECO catalogue specifies:

FPM

as the material for CORTECO 01035950.

FPM belongs to the fluoroelastomer family. The designation FKM is also widely used internationally for this elastomer group.

FPM/FKM materials are used in technical radial shaft seals for applications involving compatible oils, lubricants and operating conditions requiring the properties of a fluoroelastomer.

When selecting the seal, consider:

• lubricant type
• operating temperature
• shaft speed
• shaft surface condition
• lubrication conditions
• transmission or differential design
• equipment manufacturer requirements

A specific operating temperature range should not be assigned to CORTECO 01035950 solely from generic FPM material data.

FPM/FKM should also not automatically be described as Viton. Viton is a trademark for specific fluoroelastomer materials, while FPM/FKM identifies the broader elastomer family.

B1BASLSFRDX146 construction

The exact catalogue profile is:

B1BASLSFRDX146

This is one of the key technical identification parameters for CORTECO 01035950.

Product data for the exact reference additionally confirms:

• additional dust lip
• right-hand directional sealing structure
• compound 75/99.5 mm outside geometry

When evaluating an alternative seal, the complete combination should therefore be considered:

FPM + B1BASLSFRDX146 + 42x75/99.5x12 mm

Individual letters and numbers within B1BASLSFRDX146 should not be assigned additional construction meanings unless they are explicitly confirmed by CORTECO documentation for this exact product.

Right-hand directional sealing structure

Product data for CORTECO 01035950B specifies:

Right-hand Twist

This is an important construction characteristic.

Directional radial shaft seals may incorporate surface features designed for a particular direction of shaft rotation. Therefore, a right-hand directional seal should not automatically be replaced by a seal with an opposite directional characteristic simply because its nominal dimensions match.

The direction of rotation and requirements of the exact installation should be confirmed during replacement selection.

Additional dust lip

CORTECO 01035950B incorporates an:

additional dust lip

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

Depending on the operating environment, contamination may include:

• dust
• dirt
• fine particles
• moisture
• road contamination
• general operating debris

This feature is particularly relevant for drivetrain components exposed to demanding external conditions.

CORTECO 01035950 - differential shaft oil seal

CORTECO 01035950B is catalogued as a:

differential shaft seal

and is associated with specified Ford drivetrain applications.

The seal is used in particular Ford Transit applications, but this should not be interpreted as compatibility with every Ford Transit or every Ford differential.

Correct selection should consider:

• CORTECO reference
• Ford OE reference
• vehicle version
• drivetrain configuration
• differential or axle type
• exact installation position

CORTECO 01035950 vs Ford 1042063

A confirmed Ford OE reference is:

FORD 1042063

The cross-reference relationship is:

CORTECO 01035950 / 01035950B

FORD 1042063

This provides an important route for identifying the correct seal.

If the removed component or vehicle documentation specifies Ford 1042063, CORTECO 01035950B is associated with that reference.

The exact vehicle and installation position should still be verified.

CORTECO 01035950 vs Ford 95VB4676A1A

Another confirmed Ford reference is:

95VB4676A1A

This engineering reference is associated with CORTECO 01035950B.

The product can therefore be identified using either:

Ford 1042063

or:

Ford 95VB4676A1A

depending on the catalogue or technical documentation being used.

Ford Transit applications

Application data for CORTECO 01035950B includes specified versions of:

• Ford Transit Bus
• Ford Transit Van
• Ford Transit Platform/Chassis

The seal appears in catalogue data for particular Transit generations and drivetrain configurations.

Compatibility should always be confirmed using the exact vehicle specification, drivetrain configuration and OE number.

The description:

Ford Transit differential seal

alone is not sufficient to guarantee compatibility with a specific vehicle.

Alternative designations and reference numbers

Useful identification and search variants include:

• CORTECO 01035950
• CORTECO 01035950B
• 01035950 CORTECO
• 01035950B CORTECO
• CORTECO 82035950
• CORTECO 01035950 FPM
• CORTECO 01035950 FKM
• CORTECO 01035950 B1BASLSFRDX146
• CORTECO 01035950 FPM B1BASLSFRDX146
• CORTECO B1BASLSFRDX146
• CORTECO B1BASLSFRDX146 42x75/99.5x12
• CORTECO 01035950 42x75/99.5x12
• CORTECO 01035950B 42x75/99.5x12
• Simmerring 42x75/99.5x12
• FPM Simmerring 42x75/99.5x12
• FKM oil seal 42x75/99.5x12
• differential oil seal 42x75/99.5x12
• Ford differential oil seal
• Ford Transit differential seal
• Ford 1042063
• Ford 95VB4676A1A

Confirmed references:

CORTECO

• 01035950
• 01035950B
• 82035950

FORD

• 1042063
• 95VB4676A1A

Why is 42x75x12 mm not sufficient?

CORTECO 01035950 has compound geometry:

42x75/99.5x12 mm

Therefore, describing the product simply as:

42x75x12 mm

is technically incomplete.

The additional 99.5 mm diameter is part of the external geometry of the seal and is important for correct identification.

Other characteristics must also be considered:

• FPM material
• B1BASLSFRDX146 profile
• additional dust lip
• right-hand directional sealing structure
• Ford OE references

Matching the basic dimensions does not automatically confirm full technical interchangeability.

CORTECO 01035950 vs a standard 42x75x12 oil seal

A conventional 42x75x12 mm radial shaft seal should not automatically be considered a replacement for CORTECO 01035950.

The CORTECO product has:

42x75/99.5x12 mm

compound geometry together with:

FPM B1BASLSFRDX146

construction.

When comparing alternatives, verify:

• d = 42 mm
• D1 = 75 mm
• D2 = 99.5 mm
• B = 12 mm
• FPM material
• B1BASLSFRDX146 profile
• additional dust lip
• right-hand directional characteristic
• Ford OE reference
• exact installation position

How to select CORTECO 01035950 correctly

The safest starting point is the exact CORTECO reference:

01035950 / 01035950B

or a confirmed Ford reference:

1042063

or:

95VB4676A1A

Then verify:

1. inside diameter - 42 mm
2. primary outside diameter - 75 mm
3. additional outside diameter - 99.5 mm
4. width - 12 mm
5. FPM material
6. B1BASLSFRDX146 profile
7. right-hand directional characteristic
8. additional dust lip
9. exact installation position

Selection and interchangeability checklist

Before ordering, verify:

• CORTECO 01035950 / 01035950B
• CORTECO 82035950
• Ford 1042063 or 95VB4676A1A
• d = 42 mm
• D1 = 75 mm
• D2 = 99.5 mm
• B = 12 mm
• FPM material
• B1BASLSFRDX146 profile
• additional dust lip
• right-hand directional sealing structure
• exact installation position

Selection based only on the basic 42x75x12 mm dimensions is not sufficient.

Installation of CORTECO 01035950

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

Inspect:

• shaft sealing surface
• wear grooves
• scratches
• burrs
• corrosion
• housing condition
• alignment
• shaft runout
• bearing play

Because of the B1BASLSFRDX146 profile and compound 75/99.5 mm external geometry, particular care should be taken to prevent deformation or damage during installation.

The seal should be pressed evenly and squarely into position using a suitable installation tool.

Avoid applying concentrated impact loads to the seal.

What should be checked if the differential seal was leaking?

If the previous seal was leaking, inspect the surrounding assembly before fitting CORTECO 01035950.

Check:

• shaft sealing surface
• shaft wear groove
• radial runout
• bearing play
• bearing condition
• alignment
• seal housing
• lubricant level
• correct lubricant specification
• differential or axle breather, where applicable

Installing a new Simmerring may not permanently solve the problem if the underlying cause is shaft wear, excessive bearing clearance, misalignment or another mechanical fault.

FAQ - CORTECO 01035950

What are the dimensions of CORTECO 01035950?

The complete catalogue dimensions are 42x75/99.5x12 mm: 42 mm inside diameter, 75 mm primary outside diameter, 99.5 mm additional outside diameter and 12 mm width.

What material is CORTECO 01035950 made from?

The CORTECO catalogue specifies FPM fluoroelastomer.

What is the profile of CORTECO 01035950?

The exact profile designation is B1BASLSFRDX146.

Does CORTECO 01035950 have a dust lip?

Yes. Product data for CORTECO 01035950B confirms an additional dust lip.

Is CORTECO 01035950 a directional oil seal?

Yes. Product data identifies a right-hand directional sealing structure for this seal.

What is CORTECO 01035950 used for?

It is catalogued as a differential shaft seal and is associated with specified Ford drivetrain applications, including particular Ford Transit configurations.

What Ford references correspond to CORTECO 01035950B?

Confirmed Ford references are 1042063 and 95VB4676A1A.

Can a standard 42x75x12 mm oil seal replace CORTECO 01035950?

Automatic interchangeability should not be assumed. CORTECO 01035950 has complete 42x75/99.5x12 mm geometry, FPM material, B1BASLSFRDX146 profile, an additional dust lip and a right-hand directional sealing structure.

CORTECO 01035950 FPM B1BASLSFRDX146 42x75/99.5x12 mm - key information

CORTECO 01035950 is an FPM differential radial shaft oil seal with B1BASLSFRDX146 profile and compound dimensions of 42x75/99.5x12 mm. It incorporates an additional dust lip and a right-hand directional sealing structure. Additional CORTECO references are 01035950B and 82035950. Confirmed Ford references are 1042063 and 95VB4676A1A.

Availability from simmering.pl

CORTECO 01035950 FPM B1BASLSFRDX146 42x75/99.5x12 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 dimensions.