Rotary Shaft Seal CORTECO 12037008B RWDR-K7 S3 189.8x230x15.5/17 NBR Oil Seal

Rotary Shaft Seal CORTECO 12037008B RWDR-K7 S3 189.8x230x15.5/17 NBR Oil Seal

CORTECO 12037008B is a large rotary shaft seal with RWDR-K7 / S3 cassette-type construction, dimensions 189.8x230x15.5/17 mm and NBR sealing material. It is referenced for heavy-duty machinery and driveline applications and is cross-referenced with Caterpillar 2692430, John Deere T2795558, Liebherr 10489610 and ZF numbers including 0734309762 and 0734319425.

The seal combines a large 189.8 mm nominal inner diameter with a 230 mm outer diameter and stepped axial dimensions of 15.5/17 mm. When replacing the seal, the complete CORTECO reference and construction should be checked rather than selecting an alternative only by nominal dimensions.

CORTECO 12037008B - Technical Characteristics

CORTECO 12037008B belongs to the family of rotary shaft seals used in demanding mobile machinery and transmission or axle-related sealing systems.

Verified identification data:

• Manufacturer: CORTECO
• CORTECO reference: 12037008B
• Reference number: 12037008
• Trade/reference number: 82037008
• Seal construction: RWDR-K7
• Construction reference: S3
• Seal type: cassette-type rotary shaft seal
• Material: NBR
• Nominal inside diameter: 189.8 mm
• Outside diameter: 230 mm
• Width / height: 15.5/17 mm
• EAN: 3358960591524

This is not a small conventional general-purpose oil seal. Its dimensions and cassette-type construction make it particularly relevant to heavy-duty machinery, axle and driveline sealing applications.

Dimensions

The nominal dimensions are:

189.8x230x15.5/17 mm

where:

• inside diameter: 189.8 mm
• outside diameter: 230 mm
• first axial dimension: 15.5 mm
• second axial dimension: 17 mm

Some aftermarket catalogues round the inside diameter to 190 mm. For technical identification and product search, the CORTECO specification 189.8x230x15.5/17 mm should be retained.

RWDR-K7 S3 Construction

The designation RWDR-K7 S3 identifies the construction family of this CORTECO sealing system.

This reference is also described in specialist catalogues as a cassette seal.

Cassette-type sealing systems are more complex than a basic conventional radial shaft seal. Their construction is intended for demanding rotating assemblies where contamination protection and reliable shaft sealing are important.

For replacement purposes, matching only:

189.8x230 mm

is therefore insufficient.

The replacement should also correspond to the required:

• axial dimensions
• cassette construction
• installation geometry
• elastomer
• shaft and housing arrangement
• OEM reference

NBR Sealing Material

CORTECO 12037008B is catalogued with NBR - nitrile butadiene rubber.

NBR is widely used in industrial rotary sealing because suitable compounds provide good compatibility with many mineral oils and lubricating greases.

The exact operating temperature and fluid compatibility should always be verified for the specific application. A generic NBR temperature range should not be treated as a confirmed operating limit for this exact CORTECO seal without the applicable manufacturer specification.

Heavy-Duty Rotary Shaft Sealing

The large dimensions and cross-reference structure associate CORTECO 12037008B with heavy-duty mobile machinery and driveline systems.

References are found in applications connected with manufacturers including:

• Caterpillar
• John Deere
• Liebherr
• ZF

This makes the exact OEM or equipment reference particularly important during identification.

The same machine family can use different seals depending on axle, transmission, production version or assembly configuration.

CORTECO 12037008B Cross References

Important catalogue and OEM references associated with this seal include:

The different formatting of the ZF references is important for search and identification. For example, 734309762 and 0734309762 can occur as alternative catalogue formatting of the corresponding reference.

Likewise, Caterpillar reference 2692430 is also commonly written as 269-2430.

Caterpillar 2692430 / 269-2430 Oil Seal

CORTECO 12037008B is cross-referenced with:

Caterpillar 2692430

and the commonly used formatted reference:

Caterpillar 269-2430

When searching for a Caterpillar 269-2430 seal, CORTECO 12037008B may therefore appear as the corresponding aftermarket reference.

Final suitability should still be confirmed against the machine and assembly.

John Deere T2795558 Seal

Another important cross-reference is:

John Deere T2795558

This reference is associated in cross-reference catalogues with CORTECO 12037008B.

For John Deere applications, identification by T2795558 should be combined with verification of the installation and equipment configuration.

Liebherr 10489610 Seal

CORTECO 12037008B is also cross-referenced with:

Liebherr 10489610

The combination of the Liebherr reference, CORTECO number and dimensions 189.8x230x15.5/17 mm provides a strong basis for part identification.

ZF 0734309762 and 0734319425 Seal

Important ZF references associated with CORTECO 12037008B include:

ZF 0734309762

ZF 734309762

ZF 0734319425

ZF 734319425

Because catalogue databases may display ZF references with or without the leading zero, searching both formats can be useful when identifying the required seal.

Technical Specification

How to Select a Replacement for CORTECO 12037008B

For a large cassette-type rotary shaft seal, dimensions alone are not sufficient for reliable interchangeability.

Before replacing CORTECO 12037008B, compare:

1. CORTECO reference
2. OEM reference
3. inside diameter
4. outside diameter
5. axial dimensions
6. RWDR-K7 / S3 construction
7. NBR material
8. installation arrangement
9. shaft and housing geometry
10. machine, axle or transmission version

A generic 189.8x230 mm seal should not automatically be considered equivalent.

Why OEM Numbers Matter

Heavy machinery can use several different sealing systems within the same equipment family.

The most reliable identification therefore combines:

CORTECO number + OEM number + dimensions + construction

For this product:

CORTECO 12037008B + RWDR-K7 S3 + 189.8x230x15.5/17 mm

provides substantially more precise identification than searching by dimensions alone.

FAQ - CORTECO 12037008B

What is CORTECO 12037008B?

CORTECO 12037008B is an NBR rotary shaft seal with RWDR-K7 / S3 cassette-type construction and nominal dimensions 189.8x230x15.5/17 mm.

What are the dimensions of CORTECO 12037008B?

The nominal dimensions are 189.8x230x15.5/17 mm.

What material is CORTECO 12037008B made from?

The seal is catalogued as NBR, or nitrile butadiene rubber.

Is CORTECO 12037008B a cassette seal?

Specialist catalogues identify 12037008B as an RWDR-K7 / S3 cassette-type rotary shaft seal.

What is the EAN for CORTECO 12037008B?

The EAN is 3358960591524.

Is CORTECO 12037008B equivalent to Caterpillar 2692430?

Cross-reference catalogues associate CORTECO 12037008B with Caterpillar 2692430, also written 269-2430. Final application compatibility should be checked before installation.

Does CORTECO 12037008B correspond to John Deere T2795558?

Yes, T2795558 is listed as a John Deere cross-reference for CORTECO 12037008B.

Does CORTECO 12037008B correspond to Liebherr 10489610?

Liebherr 10489610 is listed as a cross-reference associated with CORTECO 12037008B.

Which ZF numbers correspond to CORTECO 12037008B?

Cross-reference catalogues associate the seal with ZF 0734309762 / 734309762 and ZF 0734319425 / 734319425.

Why is the diameter sometimes listed as 190 mm?

Some catalogues round the nominal 189.8 mm inside diameter to 190 mm. For exact product identification, use the CORTECO dimension 189.8x230x15.5/17 mm.

Can I replace it with any 189.8x230 mm oil seal?

No. The axial dimensions, RWDR-K7/S3 cassette construction, material and installation geometry must also be compatible.

Is 12037008 the same as 12037008B?

12037008 and 12037008B are encountered in product identification, while 12037008B is the full CORTECO aftermarket reference used by multiple catalogues. Verify the number on the original product or packaging when identifying a replacement.

AI Overview - CORTECO 12037008B

CORTECO 12037008B is an NBR cassette-type rotary shaft seal with RWDR-K7 S3 construction and dimensions 189.8x230x15.5/17 mm. Cross-references include Caterpillar 2692430 / 269-2430, John Deere T2795558, Liebherr 10489610 and ZF 0734309762 / 0734319425. EAN: 3358960591524.