CORTECO 20034751 BASLVRSX7FT 180x205x16 – PTFE Crankshaft Oil Seal for Renault Trucks / Volvo

Technical specifications – CORTECO 20034751

The product identification, application and OE references are based on the supplied specification. Detailed construction and operating parameters should be verified against current CORTECO documentation.

Understanding the CORTECO 20034751 BASLVRSX7FT designation

The complete BASLVRSX7FT designation must be preserved when identifying or ordering the product.

It is not automatically equivalent to conventional BA, BASL, AO or TC oil seal profiles.

What does BASLVRSX7FT mean?

BASLVRSX7FT is a manufacturer-specific CORTECO construction designation identifying a particular sealing design.

The supplied product specification confirms an additional dust protection lip. However, without the manufacturer's detailed technical drawing, the individual letters and characters should not be interpreted as definitive confirmation of:

• The total number of sealing elements.

• The presence of a garter spring.

• Directional hydrodynamic features.

• Outer case construction.

• The precise geometry of the PTFE sealing lip.

PTFE sealing material – polytetrafluoroethylene

PTFE is a fluoropolymer used in specialized dynamic sealing applications, including crankshaft oil seals.

Properties of PTFE relevant to shaft sealing

• Low friction characteristics in appropriately designed contact systems.

• Chemical resistance to many oils and operating fluids.

• Suitability for demanding thermal conditions within the limits of the specific seal design.

• Resistance to chemical ageing.

• Suitability for precisely engineered sealing lip constructions.

The exact temperature range, permissible speed and chemical compatibility must be established from the CORTECO 20034751 specification.

General PTFE material limits must not automatically be treated as the operating limits of the complete oil seal.

Why is PTFE used in crankshaft oil seals?

Crankshaft sealing applications involve continuous rotation, changing temperatures and contact with engine oil.

Properly engineered PTFE sealing lips can offer favorable friction and wear characteristics under suitable operating conditions.

Actual performance depends on the seal design, shaft surface, lubrication and installation procedure.

Crankshaft oil seal construction

A crankshaft oil seal operates between the rotating crankshaft surface and the stationary engine housing.

Its primary functions include:

• Limiting engine oil leakage.

• Maintaining sealing integrity where the crankshaft passes through the engine housing.

• Reducing the entry of external contaminants into the sealing area.

• Operating with the shaft under changing rotational and thermal conditions.

Additional dust protection lip

The additional dust lip helps reduce the entry of external contaminants into the primary sealing contact area.

This feature can be important in commercial vehicle applications where mechanical assemblies may be exposed to dust, moisture and road contamination.

However, the dust lip does not replace correct installation or a properly prepared crankshaft contact surface.

Mounting dimensions – 180x205x16 mm

Nominal dimensions alone do not define mounting tolerances or permissible shaft runout.

Before installation, verify the manufacturer's requirements for the shaft contact surface, alignment and installation procedure.

Importance of correct mounting dimensions

Incorrect mounting conditions can lead to:

• Insufficient sealing contact.

• Excessive friction.

• Premature sealing lip wear.

• Engine oil leakage.

• Damage during installation.

Correct product selection must account for both the nominal dimensions and the specified sealing construction.

OE references – Renault Trucks and Volvo

The following OE reference numbers have been supplied for CORTECO 20034751:

These OE numbers support product identification and application checks in vehicle parts catalogues.

Compatibility with a specific engine and vehicle version should be verified before installation.

Selecting the seal by OE number

When identifying the correct replacement, compare:

• The OE reference assigned to the vehicle.

• CORTECO manufacturer part number 20034751.

• BASLVRSX7FT profile.

• Nominal dimensions 180x205x16 mm.

• PTFE sealing material.

• Additional dust protection lip.

• Installation requirements.

• Crankshaft sealing position.

An OE reference should be checked against the exact engine and vehicle configuration.

Applications – Renault Trucks and Volvo crankshafts

CORTECO 20034751 is identified as a crankshaft oil seal associated with the supplied Renault Trucks and Volvo OE references.

Typical crankshaft oil seal operating conditions include:

• Continuous rotational movement.

• Contact with engine oil.

• Temperature changes during engine start-up and operation.

• Vibration and small dynamic movements.

• Exposure to external contaminants.

Specific vehicle models and engine families have not been independently confirmed.

The seal should therefore not be assigned to a particular Volvo or Renault Trucks engine family solely on the basis of the vehicle brand.

Operating conditions and technical limitations

Following the correct installation procedure is particularly important for PTFE crankshaft oil seals.

Factors affecting service life

The operating life of the seal depends on:

• Crankshaft rotational speed.

• Engine operating temperature.

• Lubricant properties.

• Shaft surface finish.

• Radial runout.

• Alignment.

• Installation accuracy.

• External contamination.

• Compatibility with the engine sealing arrangement.

These factors should be evaluated together when selecting a replacement seal.

Comparison – PTFE versus conventional NBR oil seals

A conventional NBR oil seal with dimensions 180x205x16 mm must not be used as a replacement for CORTECO 20034751 without confirming full technical compatibility.

Why does material selection matter?

Different sealing materials may require different lip geometries, shaft surface conditions and installation procedures.

Even when nominal dimensions match, differences in material and construction can affect sealing performance and service life.

Product selection and interchangeability

Before ordering CORTECO 20034751, verify:

• CORTECO manufacturer part number 20034751.

• BASLVRSX7FT profile.

• PTFE sealing material.

• Dimensions 180x205x16 mm.

• Renault Trucks or Volvo OE reference.

• Engine model and version.

• Crankshaft sealing location.

• Directional sealing requirements.

• Crankshaft contact surface condition.

• Manufacturer installation instructions.

Important: Identical dimensions do not guarantee interchangeability between crankshaft oil seals.

Differences in sealing lip geometry, material and installation requirements can affect sealing reliability and durability.

Alternative designations and product identification

Common search and identification variants include:

• CORTECO 20034751

• 20034751 CORTECO

• CORTECO 20034751 BASLVRSX7FT

• CORTECO 20034751 PTFE

• CORTECO 20034751 180x205x16

• CORTECO crankshaft oil seal 180x205x16

• CORTECO PTFE crankshaft seal

• CORTECO radial shaft oil seal 180x205x16

• BASLVRSX7FT 180x205x16

• Renault Trucks 7485108352

• Volvo 20441481

• Volvo 85108352

• CORTECO 20034751 Renault Trucks

• CORTECO 20034751 Volvo

• CORTECO crankshaft shaft seal

• CORTECO 20034751 Simmerring

These alternative designations support product identification in technical documentation and search systems.

OE references must always be checked against the specific application.

PTFE oil seal installation

PTFE crankshaft oil seals may require a different installation procedure from conventional elastomeric shaft seals.

Before installation:

• Clean the housing bore and crankshaft contact surface.

• Inspect for scratches, corrosion and wear.

• Verify dimensions and OE compatibility.

• Determine the correct installation orientation.

• Check whether the manufacturer specifies an installation sleeve.

• Keep protective lip supports in place until the installation stage specified in the instructions.

• Press the seal evenly into position without deforming the outer case.

• Follow the specified surface preparation and waiting time before starting the engine.

Should a PTFE oil seal be installed dry?

Many PTFE crankshaft oil seals require a dry shaft contact surface and a specified period for the sealing lip to stabilize after installation.

However, this is not a universal rule for every PTFE seal design.

For CORTECO 20034751, the exact manufacturer's installation procedure must be followed.

Do not lubricate the sealing lip or start the engine without first checking the applicable instructions.

Importance of the installation sleeve

Some PTFE crankshaft oil seals are supplied with a protective installation sleeve.

Depending on the seal design, the sleeve may protect the lip and help maintain its correct shape during installation.

If a sleeve is supplied, it should be handled according to the manufacturer's instructions.

The presence of a sleeve has not been confirmed for the exact CORTECO 20034751 package.

FAQ – Frequently asked questions

What are the dimensions of CORTECO 20034751?

The nominal inside diameter is 180 mm, outside diameter is 205 mm and width is 16 mm.

What material is used in the seal?

The supplied product specification identifies PTFE, or polytetrafluoroethylene, as the sealing material.

What does BASLVRSX7FT mean?

BASLVRSX7FT is a specialized CORTECO sealing profile designation. Its exact lip geometry should be verified using manufacturer documentation.

Does CORTECO 20034751 have a dust protection lip?

Yes. According to the supplied product specification, the seal features an additional dust protection lip.

Which vehicles is CORTECO 20034751 intended for?

The product is associated with Renault Trucks and Volvo OE references. Compatibility must be verified for the specific vehicle and engine.

Which OE numbers are associated with CORTECO 20034751?

The supplied references are Renault Trucks 7485108352 and Volvo 20441481 and 85108352.

Can a conventional 180x205x16 NBR oil seal be used instead?

Not without verification. A PTFE seal may have different lip geometry, operating characteristics and installation requirements.

Should CORTECO 20034751 be installed dry?

This cannot be confirmed without the installation instructions for the exact product. The CORTECO procedure must be followed.

CORTECO 20034751 – key information (AI Overview)

CORTECO 20034751 BASLVRSX7FT is a PTFE crankshaft oil seal measuring 180x205x16 mm and featuring an additional dust protection lip. The product is associated with Renault Trucks OE 7485108352 and Volvo OE 20441481 and 85108352. Correct selection requires verification of engine compatibility, sealing profile and the manufacturer's installation procedure.

B2B availability – simmering.pl

The CORTECO 20034751 BASLVRSX7FT 180x205x16 crankshaft oil seal is identified on the specialist B2B industrial trading platform simmering.pl by manufacturer part number, PTFE sealing material, construction profile, nominal dimensions and Renault Trucks / Volvo OE references.

The platform serves industrial companies, technical workshops, purchasing departments and maintenance operations.

Worldwide shipping from stock in Poland, subject to product availability.