CORTECO 01002633 NBR B1 55x70x8 mm - Rotary Shaft Oil Seal

CORTECO 01002633 - Technical Characteristics

The CORTECO 01002633 radial shaft seal is designed to provide dynamic sealing around a rotating shaft.

Its B1 construction features an exposed metal outer surface that contributes to static sealing between the seal and the housing bore.

The primary NBR sealing lip operates in contact with the shaft surface and restricts leakage of the retained operating medium.

A circumferential garter spring supports the primary sealing lip and helps maintain contact with the shaft.

The standard B1 profile is a single-lip construction without an additional auxiliary dust lip.

NBR is commonly used in sealing applications involving compatible oils and greases, provided that the operating medium and service conditions are suitable for the elastomer.

CORTECO 01002633 B1 - Dimensions

The 55 mm inside diameter corresponds to the nominal shaft diameter.

The 70 mm outside diameter corresponds to the nominal housing bore diameter.

The 8 mm axial width defines the nominal width of the seal.

These dimensions do not independently establish shaft and housing tolerances, permissible radial runout or required surface roughness.

What Does CORTECO 01002633 NBR B1 Mean?

CORTECO - A brand supplying technical components, including radial shaft seals.

01002633 - The catalogue reference identifying this specific CORTECO shaft seal.

01002633B - A commercial reference appearing in distribution catalogues.

NBR - Nitrile butadiene rubber, a synthetic elastomer widely used in industrial sealing applications.

B1 - A radial shaft seal profile featuring an exposed metal outer surface and one primary sealing lip supported by a garter spring.

55x70x8 - Nominal dimensions expressed as inside diameter, outside diameter and axial width.

Simmerring - A technical term commonly used for radial shaft sealing rings.

Correct product identification requires matching the CORTECO reference, NBR material, B1 profile and nominal dimensions.

CORTECO B1 Oil Seal Construction

Exposed Metal Outer Surface

The B1 profile features an exposed metal outer surface designed for installation in a suitably prepared housing bore.

The metal case provides structural rigidity and contributes to static sealing between the seal and the housing.

This construction requires appropriate housing geometry, tolerances and surface quality.

Primary Sealing Lip

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

Its function is to restrict leakage of the operating medium from the sealed assembly.

Sealing performance depends on shaft surface condition, lubrication and operating conditions.

Garter Spring

The standard B1 construction incorporates a circumferential garter spring supporting the primary sealing lip.

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

The exact spring material is not established by the B1 profile designation alone.

No Auxiliary Dust Lip

The standard B1 profile is a single-lip construction.

It does not include the additional dust lip found in certain double-lip radial shaft seals.

Where increased protection against external contamination is required, the sealing arrangement specified by the equipment manufacturer should be verified.

NBR - Material Properties and Operating Considerations

Nitrile butadiene rubber is a synthetic elastomer widely used in radial shaft seals.

Depending on the specific compound, NBR can provide suitable compatibility with certain mineral oils and lubricating greases.

When selecting CORTECO 01002633, the following operating conditions should be considered:

• Type of operating medium.

• Operating temperature.

• Shaft surface speed.

• Pressure within the sealed assembly.

• Shaft surface condition and roughness.

• Lubrication conditions.

• Exposure to external contamination.

The NBR designation alone does not define the exact permissible temperature range, maximum pressure or shaft speed for this specific CORTECO reference.

CORTECO 01002633 B1 vs Other Oil Seal Profiles

The table describes standard construction characteristics of these seal profile families. It does not establish interchangeability between specific product references.

B1 vs BA

The B1 profile features an exposed metal outer surface, while BA uses a rubber-covered outer surface.

This difference affects static sealing between the oil seal and the housing bore.

B1 vs BASL

B1 is a single-lip construction with an exposed metal outer surface.

BASL features a rubber-covered outside diameter and an additional auxiliary dust lip.

B1 vs B2

Both profiles feature exposed metal outer surfaces.

The B2 profile incorporates a reinforced metal case construction.

These profiles should not automatically be considered interchangeable.

Alternative Designations and Reference Numbers

The following designation formats are used to identify this product:

• CORTECO 01002633

• CORTECO 01002633B

• 01002633 NBR B1

• 01002633B CORTECO

• CORTECO B1 55x70x8

• CORTECO 55x70x8 NBR Simmerring

• CORTECO 01002633 Rotary Shaft Seal

• CORTECO 01002633 Radial Shaft Oil Seal

The reference 01002633B appears in commercial catalogues as an alternative product designation.

When identifying a replacement, always verify the complete catalogue reference and the seal construction.

Applications of CORTECO 01002633

CORTECO 01002633 belongs to the category of radial shaft seals used in mechanical assemblies containing rotating components.

The B1 construction is designed for installation in a suitably prepared housing bore, where the exposed metal outer surface contributes to static sealing.

The primary NBR sealing lip restricts leakage of compatible lubricants from the sealed assembly.

Suitability for a particular vehicle, gearbox, engine or industrial machine must be confirmed using the relevant part number and technical requirements.

Nominal dimensions of 55x70x8 mm alone are not sufficient to establish compatibility with a specific equipment model.

Selection and Interchangeability

Before purchasing CORTECO 01002633, verify:

1. The CORTECO catalogue reference 01002633.

2. Nominal shaft diameter: 55 mm.

3. Nominal housing bore diameter: 70 mm.

4. Axial width: 8 mm.

5. Sealing material: NBR.

6. B1 profile with an exposed metal outer surface.

7. Primary sealing lip and garter spring construction.

8. Requirements for external contamination protection.

9. Compatibility with the operating medium.

10. Operating temperature, shaft speed, pressure and installation conditions.

Matching nominal dimensions of 55x70x8 mm do not guarantee complete interchangeability.

CORTECO 01002633 B1 should not automatically be replaced with a BA, BASL, B2 or different elastomer version without confirming the technical requirements.

Installation and Operating Considerations

Before installation, thoroughly clean the shaft and housing bore.

The shaft sealing surface should be free from corrosion, scratches, burrs and wear grooves.

When installing a B1 seal, use an appropriate tool to apply the installation force evenly to the metal case.

Do not apply installation force directly to the sealing lip or garter spring.

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

Ensure suitable lubrication of the contacting surfaces.

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

Technical Specification

FAQ - CORTECO 01002633 NBR B1

1. What are the dimensions of CORTECO 01002633?

The seal has a nominal inside diameter of 55 mm, outside diameter of 70 mm and axial width of 8 mm.

2. What does the B1 profile mean?

B1 identifies a radial shaft seal with an exposed metal outer surface and one primary sealing lip supported by a garter spring.

3. What material is CORTECO 01002633 made from?

The sealing material is nitrile butadiene rubber (NBR).

4. Are CORTECO 01002633 and 01002633B the same product?

01002633 is the catalogue reference, while 01002633B appears as a commercial reference. The complete designation and technical characteristics should be verified when ordering.

5. Does CORTECO 01002633 have an auxiliary dust lip?

The standard B1 profile is a single-lip construction and does not include an additional auxiliary dust lip.

6. Can a B1 oil seal be replaced with a BA 55x70x8 seal?

Not automatically. B1 features an exposed metal outer surface, while BA has a rubber-covered outer surface. This construction difference may affect installation and static sealing.

7. Is NBR suitable for oil sealing applications?

NBR is commonly used with compatible oils and greases. Suitability for a particular medium depends on the elastomer compound and operating conditions.

8. Can CORTECO 01002633 be replaced with an FPM seal?

Not without verification. NBR and FPM have different chemical and thermal properties, and the replacement may also have a different construction.

CORTECO 01002633 NBR B1 55x70x8 mm - Key Product Information

CORTECO 01002633 is a radial shaft oil seal (Simmerring) with nominal dimensions of 55x70x8 mm. Manufactured from nitrile butadiene rubber (NBR), it features the B1 profile with an exposed metal outer surface and a single spring-loaded primary sealing lip. The commercial reference 01002633B is also used. Correct replacement requires matching dimensions, material and construction.