CORTECO 12011305 FPM B1BASLRD 23x35x7 mm - Radial Shaft Oil Seal Simmerring

Product Description

CORTECO 12011305 is a radial shaft oil seal (Simmerring) with dimensions of 23x35x7 mm, manufactured from FPM fluoroelastomer and identified by the B1BASLRD sealing profile. The seal features a primary sealing lip, an additional dust lip and a right-hand directional sealing design. Catalogue applications include crankshaft and transmission shaft sealing. The product is associated with OE references used by AUDI, VW, FIAT, AUTOBIANCHI and LANCIA.

Technical Specifications

What Does CORTECO 12011305 FPM B1BASLRD Mean?

CORTECO - a specialist brand of automotive and industrial sealing products within the Freudenberg Group.

12011305 - the manufacturer's product identification number for this radial shaft oil seal.

FPM - fluoroelastomer, a synthetic rubber material used in sealing applications requiring resistance to suitable oils, lubricants and elevated temperatures. Its actual operating limits depend on the elastomer compound and application conditions.

B1BASLRD - the sealing profile designation associated with the commercial product reference. It identifies a specific seal construction and directional sealing configuration. The complete profile must be considered when selecting a replacement.

23x35x7 mm - the nominal dimensions:

• 23 mm - shaft diameter

• 35 mm - housing bore diameter

• 7 mm - axial seal width

The profile designation is technically important because oil seals with identical dimensions may differ in lip geometry, material and directional sealing characteristics.

Construction and Operating Principle

CORTECO 12011305 is designed to create a dynamic seal between a rotating shaft and a stationary housing.

Primary sealing lip

The primary sealing lip maintains contact with the shaft surface, helping prevent lubricant from escaping from the sealed assembly.

Effective sealing depends on the shaft surface condition, correct installation, alignment and appropriate operating conditions.

Additional dust lip

The additional dust lip helps protect the primary sealing area against external contamination, including dust and dirt.

This feature is relevant in automotive applications where the sealing assembly may be exposed to environmental contaminants.

Right-hand directional sealing design

The identified product features a right-hand directional sealing configuration.

Directional sealing features are intended to operate with a specified shaft rotation direction. An incompatible directional seal may reduce sealing effectiveness and increase the risk of oil leakage.

The required direction of shaft rotation should therefore be verified before installation.

FPM sealing material

FPM fluoroelastomer provides resistance to many lubricating oils and elevated temperatures, depending on the specific compound and operating medium.

FPM should not automatically be replaced with NBR, ACM or another elastomer without checking chemical compatibility and operating conditions.

Alternative Designations and OE Reference Numbers

The following manufacturer and OE references are associated with CORTECO 12011305.

Alternative product identification formats include:

• CORTECO 12011305

• 12011305 CORTECO

• CORTECO 12011305 FPM

• CORTECO 12011305 B1BASLRD

• CORTECO 12011305 23x35x7

• CORTECO 12011305 Simmerring

The OE references are provided for part identification and cross-reference purposes. They do not establish compatibility with every vehicle manufactured by the listed brands.

Exact compatibility must be confirmed using the original part number and the specific vehicle, engine or transmission configuration.

CORTECO 12011305 vs Other 23x35x7 mm Oil Seals

Oil seals with identical nominal dimensions are not necessarily interchangeable.

Differences in sealing lip geometry, material or directional configuration can affect lubricant retention and operating performance.

A replacement should therefore be selected using the complete technical specification rather than dimensions alone.

Applications and Compatibility

CORTECO 12011305 is associated with catalogue references for crankshaft and transmission shaft sealing applications.

The product is linked to original equipment reference numbers used by AUDI, VW, FIAT, AUTOBIANCHI and LANCIA.

Its function is to help retain lubricant within the mechanical assembly while limiting the entry of external contaminants.

Compatibility with a specific engine, gearbox or vehicle model must be verified using the applicable OE reference and manufacturer catalogue.

Selection and Interchangeability

Before ordering CORTECO 12011305, verify the following:

1. Manufacturer product number 12011305 or a confirmed cross-reference.

2. Nominal dimensions of 23x35x7 mm.

3. FPM elastomer material.

4. Correct sealing profile.

5. Right-hand directional configuration.

6. Presence of the additional dust lip.

7. Compatibility with the shaft rotation direction.

8. Lubricant type and operating conditions.

9. Original equipment reference and installation position.

Important: Identical dimensions do not guarantee full interchangeability. The sealing profile, elastomer and directional configuration must also be compatible with the intended application.

Installation and Operating Recommendations

Before installation, clean the housing bore and inspect the shaft sealing surface for scratches, corrosion, wear grooves and other damage.

Use a suitable installation tool to apply uniform pressure to the rigid outer section of the seal. Avoid applying force directly to the sealing lips.

Ensure the seal is installed in the correct orientation and that the directional sealing design matches the intended shaft rotation.

Prepare and lubricate the contact surface according to the relevant equipment manufacturer's installation instructions.

Store the oil seal in a clean, dry environment, protected against deformation, contamination, excessive heat and direct sunlight.

Frequently Asked Questions (FAQ)

1. What are the dimensions of CORTECO 12011305?

CORTECO 12011305 measures 23x35x7 mm. It is designed for a nominal shaft diameter of 23 mm and a housing bore diameter of 35 mm, with an axial width of 7 mm.

2. What does FPM mean in CORTECO 12011305?

FPM stands for fluoroelastomer, a synthetic rubber used in sealing applications requiring resistance to suitable lubricants and elevated temperatures.

3. What does B1BASLRD mean?

B1BASLRD is a sealing profile designation associated with the commercial reference. It identifies a specific seal construction. The exact profile should be verified against the supplied product and current CORTECO documentation.

4. Does CORTECO 12011305 have an additional dust lip?

Yes. The identified seal construction includes an additional dust lip to help protect the primary sealing area from external contamination.

5. Is CORTECO 12011305 a right-hand directional oil seal?

Yes. The product is identified as having a right-hand directional sealing design. The required shaft rotation direction should be checked before installation.

6. Can CORTECO 12011305 be used as a crankshaft oil seal?

Crankshaft sealing is one of its listed catalogue applications. Compatibility with a specific engine must be verified using the original equipment reference.

7. Can CORTECO 12011305 be replaced with any 23x35x7 mm oil seal?

No. A suitable replacement must match the required dimensions, elastomer material, sealing profile and directional configuration.

8. Which OE numbers are associated with CORTECO 12011305?

The supplied cross-references include 084311113A for AUDI and VW, and 40004200 and 7554279 for the listed FIAT, AUTOBIANCHI and LANCIA applications.

CORTECO 12011305 - Key Information

CORTECO 12011305 is a 23x35x7 mm radial shaft oil seal made from FPM fluoroelastomer. It features a primary sealing lip, an additional dust lip and a right-hand directional design. Catalogue references include crankshaft and transmission shaft applications, with OE numbers associated with AUDI, VW, FIAT, AUTOBIANCHI and LANCIA.

CORTECO 12011305 at simmering.pl

CORTECO 12011305 is available from simmering.pl, a specialist supplier of radial shaft oil seals, bearings and industrial sealing components.

We supply automotive workshops, maintenance departments, industrial customers and B2B buyers.

Orders are dispatched from our warehouse in Lublin, Poland, with shipping available throughout Europe and internationally.

Our team can assist with product identification, dimensional verification and the selection of suitable sealing components.