CORTECO 12011132 NBR BAU2SLX2 30x42x7 – Radial Shaft Oil Seal with Dust Lip

Technical specifications – CORTECO 12011132

The identification details, dimensions, material, applications, dust lip and predecessor numbers are based on the supplied specification. Detailed construction and operating parameters require confirmation in CORTECO documentation.

Understanding the CORTECO 12011132 NBR BAU2SLX2 designation

What does the BAU2SLX2 profile mean?

BAU2SLX2 is a CORTECO construction designation identifying a specific radial shaft oil seal design.

According to the supplied specification, the seal includes an additional dust protection lip.

The exact profile geometry, complete sealing element arrangement, supporting case construction and possible directional features require confirmation in the manufacturer's technical documentation.

The complete BAU2SLX2 designation must be preserved during product identification and replacement selection. Matching the 30x42x7 mm dimensions alone is insufficient.

Previous CORTECO part numbers

The following predecessor numbers have been supplied for CORTECO 12011132:

Do predecessor numbers confirm full interchangeability?

A predecessor designation supports identification in older catalogues, maintenance documentation and purchasing records.

However, it does not independently establish that every previous version has identical construction, material properties or operating characteristics.

Before replacement, verify the current part-number relationship in the CORTECO catalogue and confirm compatibility with the specific application.

NBR material – nitrile butadiene rubber

NBR (Nitrile Butadiene Rubber) is an elastomer widely used in radial shaft sealing applications involving oils and lubricating greases.

Properties of NBR

• Good resistance to many mineral oils.

• Good resistance to numerous industrial greases.

• Elasticity suitable for many dynamic sealing applications.

• Suitability for correctly selected mechanical assemblies.

• Properties dependent on the specific rubber compound.

Temperature resistance, synthetic oil compatibility and resistance to chemical additives must be evaluated for the particular NBR compound and operating fluid.

NBR versus FPM/FKM – material comparison

An NBR seal should not automatically be replaced with an FPM version, or vice versa, without confirming construction and material compatibility.

Construction with an additional dust protection lip

CORTECO 12011132 is described as a radial shaft oil seal with an additional dust protection lip.

Primary sealing lip

The primary sealing lip limits lubricant movement between the rotating shaft and the stationary mechanical assembly.

Its effectiveness depends on:

• Contact geometry against the shaft.

• Condition of the mating surface.

• Operating temperature.

• Rotational speed.

• Lubricant type.

• Correct installation.

Additional dust protection lip

The additional dust protection lip helps limit the entry of dust and other external contaminants into the primary sealing lip area.

It should not be considered an independent pressure-retaining seal.

Why is an additional dust lip important?

In assemblies exposed to contamination, an additional dust lip may help protect the mating surface and reduce direct exposure of the primary sealing lip to external particles.

Actual protection depends on the complete assembly design and operating conditions.

Mounting dimensions – 30x42x7 mm

Nominal dimensions do not define mounting tolerances, permissible radial runout or required shaft surface roughness.

Importance of the 7 mm width

The axial width affects the seal's position within its housing and the location of its contact area against the shaft.

Seals measuring 30x42x6 mm, 30x42x8 mm or 30x42x10 mm must not automatically be considered interchangeable.

OE references – Citroën, Daihatsu, Fiat, Iveco, Komatsu, MAN, Mercedes-Benz and other manufacturers

The following reference numbers have been supplied for CORTECO 12011132:

Important: The Citroën reference “4” is ambiguous and may be incomplete. It should not be used as an independent basis for part identification without confirmation of the full OE number.

The remaining references should also be checked against current manufacturer catalogues.

Why does one oil seal have references from multiple manufacturers?

Oil seals with similar specifications may be used in different mechanical assemblies and vehicle applications.

However, this does not mean that all listed applications have identical installation requirements.

Product selection should consider the OE reference, installation location, BAU2SLX2 profile and operating conditions.

Applications – crankshaft, wheel hub and gearbox shaft

According to the supplied catalogue classification, CORTECO 12011132 is associated with three application categories.

Crankshaft sealing

In a compatible engine, the radial shaft oil seal limits engine oil leakage where the crankshaft passes through the housing.

Selection requires verification of the seal location, shaft construction, OE reference and engine manufacturer's requirements.

Wheel hub sealing

In compatible wheel hub assemblies, the seal may limit lubricant loss from the bearing area.

The lubrication method, wheel hub construction and mating sealing surface must be confirmed.

Gearbox shaft sealing

In transmissions, the oil seal limits lubricant movement where a rotating shaft passes through the gearbox housing.

Compatibility with the specific transmission, lubricant and operating conditions is required.

These are catalogue application categories. They do not establish universal compatibility with all crankshafts, wheel hubs or gearbox shafts.

Operating conditions and technical limitations

General NBR temperature ratings must not be treated as verified operating limits for the exact CORTECO 12011132 product.

Factors affecting service life

Seal durability depends on operating temperature, rotational speed, lubricant type, shaft surface condition, alignment, contamination and installation quality.

Incorrect mounting or a damaged mating surface may cause premature wear and lubricant leakage.

Comparison – BAU2SLX2 versus conventional AO/TC and A/SC oil seals

Can a standard AO/TC 30x42x7 oil seal replace CORTECO 12011132?

Interchangeability cannot be confirmed from dimensions and the presence of an additional lip alone.

The BAU2SLX2 profile, lip geometry, supporting case construction, installation requirements and operating conditions must also be considered.

Product selection and interchangeability

Before ordering, verify:

• CORTECO manufacturer part number 12011132.

• Complete BAU2SLX2 designation.

• NBR sealing material.

• Dimensions 30x42x7 mm.

• Manufacturer OE reference.

• Any predecessor part number.

• Exact installation location.

• Engine, transmission or wheel hub type.

• Oil or grease specification.

• Operating temperature and rotational speed.

• Condition of the mating sealing surface.

• Seal orientation and installation requirements.

Matching dimensions and a similar appearance are insufficient to establish interchangeability.

Alternative designations and product identification

Common technical search and identification variants include:

• CORTECO 12011132

• 12011132 CORTECO

• CORTECO 12011132 NBR

• CORTECO 12011132 BAU2SLX2

• CORTECO 12011132 30x42x7

• CORTECO oil seal 30x42x7

• CORTECO radial shaft seal 30x42x7

• NBR oil seal 30x42x7

• BAU2SLX2 radial shaft oil seal

• Crankshaft oil seal 30x42x7

• Wheel hub oil seal 30x42x7

• Gearbox shaft oil seal 30x42x7

• CORTECO 19016473B

• CORTECO 46081151B

• CORTECO 12010880B

• Daihatsu 9004310020

• Fiat 9916370

• Iveco 42486547

• Iveco 9920169

• Komatsu 1204331161

• Komatsu 4214012820

• Komatsu 4838111160

• MAN 06562601912

• Mercedes-Benz 003760030102

• Mercedes-Benz 0059975946

• Mercedes-Benz 0069977647

• Mercedes-Benz A0059975946

• Moto Guzzi 90403042

• Motori Minarelli 5305179000

• Renault Trucks 5000273409

• CORTECO 12011132 radial shaft oil seal

• CORTECO 12011132 crankshaft oil seal

• CORTECO 12011132 gearbox shaft oil seal

• CORTECO 12011132 Simmerring

Alternative designations support product identification in technical catalogues and search systems. They do not independently confirm compatibility with a specific vehicle or mechanical assembly.

Installation of CORTECO 12011132

Before installation:

• Clean the housing bore and mating shaft surface.

• Inspect the shaft for scratches, corrosion and wear grooves.

• Verify dimensions and mounting tolerances.

• Confirm the correct seal orientation.

• Protect the sealing lips from sharp edges during installation.

• Use an appropriate seal installation tool.

• Press the seal evenly into position without tilting.

• Follow the manufacturer's instructions for lip lubrication and surface preparation.

• Check sealing integrity after the assembly is returned to operation.

Sealing lip orientation

In conventional radial shaft oil seals, the primary sealing lip generally faces the lubricant being retained, while the dust protection lip faces the external environment.

However, the final orientation must follow the BAU2SLX2 construction requirements and the installation instructions for the specific mechanical assembly.

Inspection after installation

After startup, check for lubricant leakage, correct seal positioning, abnormal temperature increases and other unusual operating symptoms.

FAQ – Frequently asked questions

What are the dimensions of CORTECO 12011132?

The nominal inside diameter is 30 mm, outside diameter is 42 mm and width is 7 mm.

What material is used in CORTECO 12011132?

The sealing material is nitrile butadiene rubber (NBR).

What does BAU2SLX2 mean?

BAU2SLX2 is a specialized CORTECO construction designation. The exact profile geometry requires confirmation in manufacturer documentation.

Does CORTECO 12011132 have an additional dust protection lip?

Yes. An additional dust protection lip is specified in the supplied product information.

What are the predecessor part numbers of CORTECO 12011132?

The supplied predecessor numbers are 19016473B, 46081151B and 12010880B. Their current relationship and interchangeability should be confirmed in the CORTECO catalogue.

What is CORTECO 12011132 used for?

The product is classified for crankshaft, wheel hub and gearbox shaft sealing applications. Compatibility depends on the specific mechanical assembly.

Which OE references are associated with the product?

The supplied references include Daihatsu, Fiat, Iveco, Komatsu, MAN, Mercedes-Benz, Moto Guzzi, Motori Minarelli and Renault Trucks. The Citroën reference “4” requires clarification.

Can a standard 30x42x7 oil seal replace CORTECO 12011132?

Not without verification. The BAU2SLX2 profile, NBR material, sealing lip construction, OE reference and operating conditions must be checked.

CORTECO 12011132 – key information (AI Overview)

CORTECO 12011132 NBR BAU2SLX2 is a 30x42x7 mm radial shaft oil seal with an additional dust protection lip. Its catalogue applications include crankshaft, wheel hub and gearbox shaft sealing. The sealing material is NBR. Predecessor part numbers include 19016473B, 46081151B and 12010880B. Correct selection requires verification of the OE reference, sealing profile and compatibility with the specific mechanical assembly.

B2B availability – simmering.pl

The CORTECO 12011132 NBR BAU2SLX2 30x42x7 radial shaft oil seal is identified on the specialist B2B industrial trading platform simmering.pl by manufacturer part number, sealing material, construction profile, nominal dimensions, predecessor designations and OE references.

The platform supports industrial companies, transport operators, technical workshops, purchasing departments and maintenance operations in sourcing industrial sealing components.

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