CORTECO 01032108 NBR B2 52x90x13 mm - Radial Shaft Seal Simmerring

CORTECO 01032108 NBR B2 - Technical Characteristics

CORTECO 01032108 is a radial shaft seal designed to seal the interface between a rotating shaft and a stationary housing.

Its primary function is to restrict leakage of the retained medium through the clearance between the shaft and housing.

The B2 profile is distinguished by an exposed metal outside diameter and an additionally reinforced metal case. This construction differs from rubber-covered radial shaft seals in its installation characteristics and housing bore requirements.

The NBR elastomer forms the sealing element that operates in dynamic contact with the shaft surface.

Correct product selection requires verification of the complete CORTECO 01032108 reference, nominal dimensions of 52x90x13 mm and B2 construction profile.

CORTECO 01032108 - Dimensions

Inside diameter 52 mm corresponds to the nominal shaft diameter.

Outside diameter 90 mm corresponds to the nominal housing bore diameter.

Axial width 13 mm defines the nominal width of the radial shaft seal.

These dimensions alone do not establish installation tolerances, required shaft surface roughness or permissible radial runout.

What Does CORTECO 01032108 NBR B2 Mean?

CORTECO - A technical sealing products brand associated with the Freudenberg Group.

01032108 - The catalogue reference identifying the specific product.

52x90x13 - Nominal dimensions in millimetres, expressed as inside diameter, outside diameter and axial width.

NBR - Nitrile butadiene rubber, the elastomer used for the sealing element.

B2 - A radial shaft seal profile with an exposed metal outside diameter, an additionally reinforced metal case and a spring-loaded primary sealing lip.

The B2 designation is not equivalent to B2SL. In standard radial shaft seal nomenclature, the SL suffix identifies an additional auxiliary dust lip.

B2 Simmerring Construction

Exposed Metal Outer Surface

The B2 profile features a metal outside diameter that interfaces directly with the housing bore.

Correct installation requires suitable housing geometry, tolerances and surface condition.

Unlike a rubber-covered seal, the exposed metal surface does not provide the same ability to accommodate minor irregularities in the housing bore.

Additionally Reinforced Metal Case

The B2 construction incorporates additional metal reinforcement.

The increased structural rigidity helps maintain the seal's geometry during correct installation.

However, this reinforcement does not eliminate the need for appropriate installation tools or correctly dimensioned housing bores.

Primary Sealing Lip

The primary sealing lip is manufactured from NBR and operates in contact with the rotating shaft surface.

The sealing contact restricts leakage of the retained medium.

Its effectiveness depends on shaft surface condition, lubrication and operating conditions.

Garter Spring

The standard B2 construction incorporates a circumferential garter spring supporting the primary sealing lip.

The spring helps maintain contact pressure between the sealing lip and the shaft during operation.

No Additional Dust Lip

The standard B2 profile does not include the auxiliary dust lip identified by the SL suffix.

Where additional protection against external contamination is required, the equipment documentation should be checked for a separate protective element or a different sealing profile.

NBR - Nitrile Butadiene Rubber

NBR, also known as nitrile rubber, is an elastomer widely used in radial shaft sealing applications.

It is commonly selected for systems operating with compatible oils and lubricants.

The actual performance of NBR depends on the specific rubber compound and service conditions.

The NBR designation alone does not establish:

• Exact operating temperature range.

• Maximum permissible operating pressure.

• Maximum shaft surface speed.

• Elastomer hardness.

• Compatibility with every chemical or operating medium.

These characteristics must be verified using technical documentation for the specific seal and application.

CORTECO 01032108 B2 vs Other Seal Profiles

The table compares the basic structural characteristics of these seal profile families.

The B2 profile differs from B1 through its additional metal case reinforcement.

B2SL incorporates an auxiliary dust lip that is absent from the standard B2 construction.

The BA profile has a rubber-covered outside diameter, resulting in different installation and static sealing characteristics.

Radial shaft seals with identical dimensions of 52x90x13 mm but different profiles are not automatically interchangeable.

Alternative Product Designations

The following are natural variations of the same product identification:

• CORTECO 01032108

• 01032108 CORTECO

• CORTECO 01032108 NBR B2

• CORTECO B2 52x90x13

• CORTECO 52x90x13 NBR B2

These variations are not separate OEM part numbers or confirmed cross-reference replacements.

Selection and Interchangeability of CORTECO 01032108

Before purchasing this radial shaft seal, verify:

1. CORTECO catalogue reference: 01032108.

2. Nominal shaft diameter: 52 mm.

3. Nominal housing bore diameter: 90 mm.

4. Axial width: 13 mm.

5. Construction profile: B2.

6. Sealing material: NBR.

7. Type of outer sealing surface.

8. Lubrication conditions and operating medium compatibility.

9. Operating temperature, pressure and shaft speed.

10. Requirements for additional dust protection.

The B2 profile should not automatically be replaced with BA, B1 or B2SL without checking construction and installation requirements.

Similarly, an FKM or VMQ radial shaft seal with the same dimensions is not necessarily a suitable replacement for the NBR version.

Applications of CORTECO 01032108

B2 radial shaft seals are designed to seal the interface between a rotating shaft and a stationary housing.

Their function is to restrict leakage of a compatible operating medium from the sealed assembly.

The suitability of CORTECO 01032108 for a particular application depends on dimensional compatibility, B2 construction, NBR material and operating conditions.

Without a verified OEM reference, this product should not be assigned to a specific vehicle model, engine, gearbox or industrial machine.

Installation and Operating Considerations

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

Inspect the shaft for burrs, corrosion, scratches and wear grooves in the sealing contact area.

A metal-cased radial shaft seal should be pressed evenly into the housing using a suitable installation tool.

Installation force must not be applied directly to the sealing lip or garter spring.

Protect the sealing lip when passing it over sharp shaft edges, keyways or splines.

In conventional oil-retaining arrangements, the primary spring-loaded sealing lip faces the retained medium unless the equipment documentation specifies otherwise.

Installation lubrication must be compatible with the NBR elastomer and operating medium.

Store the seal in a clean environment, protected from contamination, deformation and unsuitable storage conditions.

Technical Specification

FAQ - CORTECO 01032108 NBR B2

1. What are the dimensions of CORTECO 01032108?

The nominal dimensions are 52x90x13 mm: inside diameter 52 mm, outside diameter 90 mm and axial width 13 mm.

2. What does the B2 profile mean?

B2 identifies a radial shaft seal construction with an exposed metal outside diameter, an additionally reinforced metal case and a spring-loaded primary sealing lip.

3. Does CORTECO 01032108 have an auxiliary dust lip?

The standard B2 profile does not incorporate an auxiliary dust lip. This feature is associated with the B2SL variant.

4. What material is CORTECO 01032108 made from?

The sealing elastomer is NBR, or nitrile butadiene rubber.

5. Can a B2 seal be replaced with a B1 profile?

Not automatically. B2 incorporates additional metal case reinforcement, so construction and installation compatibility must be verified before substitution.

6. Can an FKM 52x90x13 mm seal replace the NBR version?

Such a replacement requires verification of material compatibility and operating conditions. Matching nominal dimensions alone do not guarantee interchangeability.

7. Does the B2 profile incorporate a garter spring?

Yes. The standard B2 construction uses a circumferential garter spring to support the contact pressure of the primary sealing lip.

8. Is CORTECO 01032108 compatible with a specific machine model?

Compatibility must be verified using the equipment documentation or original part number. The nominal dimensions of 52x90x13 mm alone are insufficient to confirm a specific application.

CORTECO 01032108 NBR B2 - Key Product Information

CORTECO 01032108 is an NBR radial shaft seal (Simmerring) with nominal dimensions of 52x90x13 mm. The B2 profile features an exposed metal outside diameter, an additionally reinforced metal case and a spring-loaded primary sealing lip. Unlike B2SL, the standard B2 construction does not incorporate an additional auxiliary dust lip.