CORTECO 19037037 32x47.5x9.5/10.5 NBR BASLDRW Differential Rotary Shaft Seal

CORTECO 19037037 32x47.5x9.5/10.5 NBR BASLDRW Differential Rotary Shaft Seal

CORTECO 19037037, also listed in current aftermarket catalogues as 19037037B, is an NBR differential rotary shaft seal / oil seal with CORTECO BASLDRW design. Its complete dimensions are 32x47.5x9.5/10.5 mm.

The seal has a 32 mm inside diameter, 47.5 mm outside diameter and a specific profile incorporating 9.5 mm and 10.5 mm heights. This reference also features an additional dust lip and a variable dynamic twist.

The key technical identification is:

CORTECO 19037037 / 19037037B → BASLDRW → NBR → 32x47.5x9.5/10.5 mm → variable twist → additional dust lip → differential shaft seal

CORTECO 19037037 / 19037037B – characteristics

Key product specifications:

• Manufacturer: CORTECO
• Part number: 19037037
• Current/alternative reference: 19037037B
• CORTECO trade number: 82037037
• Product type: rotary shaft seal / oil seal
• Catalogue application: differential
• Design: BASLDRW
• Material: NBR – nitrile rubber
• Inside diameter: 32 mm
• Outside diameter: 47.5 mm
• Height 1: 9.5 mm
• Height 2: 10.5 mm
• Complete dimensions: 32x47.5x9.5/10.5 mm
• Dynamic structure: variable twist
• Dust protection: additional dust lip
• EAN: 3358960599384
• MG/Rover OE references: ADU5738, 22A1283

The full combination of BASLDRW + NBR + 32x47.5x9.5/10.5 mm is much more useful for precise identification than the main diameters alone.

CORTECO 19037037 dimensions

The complete dimensional designation should be retained as:

32x47.5x9.5/10.5 mm

It should not be simplified to 32x47.5x9.5 mm, because the additional 10.5 mm dimension is part of the specific geometry of this seal.

This distinction is particularly important when searching for an equivalent or checking an existing component.

NBR nitrile rubber

The specified elastomer for CORTECO 19037037 / 19037037B is:

NBR – nitrile butadiene rubber

The material is part of the exact product specification.

A seal manufactured from FPM/FKM, ACM, VMQ or another elastomer should not automatically be considered interchangeable simply because it has similar dimensions.

When comparing alternatives, the material should be considered together with:

dimensions + BASLDRW design + dynamic structure + lip configuration + application

BASLDRW design

The exact CORTECO design designation for this reference is:

BASLDRW

For accurate technical identification, BASLDRW should remain associated with the full product reference:

CORTECO 19037037 BASLDRW NBR 32x47.5x9.5/10.5 mm

This helps distinguish the product from other 32 mm shaft seals that may have different external dimensions, materials or sealing geometries.

When selecting a replacement, searching only for:

32x47.5 oil seal

is therefore insufficient.

Variable dynamic twist

An important characteristic of CORTECO 19037037B is its variable dynamic twist.

Catalogue data may describe this feature using the German term:

Wechseldrall

or the English description:

variable twist.

This means the seal should not simply be classified as a conventional right-hand or left-hand directional seal.

The actual dynamic sealing structure must be considered when selecting an alternative.

This characteristic is particularly relevant because two seals with identical nominal dimensions can have different dynamic lip designs.

Additional dust lip

CORTECO 19037037B features an additional dust lip.

The additional lip provides a secondary barrier on the external side of the sealing arrangement and distinguishes this product from simpler shaft seal designs.

For replacement selection, the presence of this lip should therefore be checked along with:

32x47.5x9.5/10.5 mm + NBR + BASLDRW

rather than relying on nominal dimensions alone.

CORTECO 19037037 differential shaft seal

CORTECO 19037037B is catalogued as a:

differential shaft seal

or, using broader international terminology:

differential rotary shaft seal
differential oil seal
differential seal

These search variants are particularly useful for international customers who may not know the exact CORTECO reference.

Depending on the vehicle and transmission layout, customers may also search for an axle or driveshaft seal. However, those terms should not by themselves be treated as confirmation of the exact installation position.

The OE reference and vehicle application should be used for final fitment verification.

CORTECO 19037037 – Rover Mini and MG applications

CORTECO 19037037B is catalogued for selected Rover Mini applications, including selected Mini hatchback and Mini Cabriolet versions.

Important MG/Rover OE references include:

ADU5738
22A1283

This creates a particularly useful identification relationship:

MG/Rover ADU5738 → CORTECO 19037037B → BASLDRW → NBR → 32x47.5x9.5/10.5 mm

and:

MG/Rover 22A1283 → CORTECO 19037037B

The OE reference should be used to confirm the exact application before installation.

ADU5738 – which oil seal?

The OE reference:

ADU5738

is associated with:

CORTECO 19037037B

and the BASLDRW differential shaft seal.

Customers may therefore search for this product using phrases such as:

ADU5738 oil seal
ADU5738 differential seal
ADU5738 shaft seal
Rover ADU5738 seal
Mini ADU5738 oil seal
CORTECO 19037037 ADU5738

Connecting the OE reference with the exact CORTECO number makes identification substantially more reliable than searching by dimensions alone.

22A1283 oil seal

Another important OE reference is:

22A1283

This number is associated with MG/Rover applications and CORTECO 19037037B.

For older vehicles and classic Mini applications, customers frequently search by historical OE or component references rather than current aftermarket numbers.

For this reason, the relationship:

22A1283 → CORTECO 19037037 / 19037037B

is particularly useful on an international product page.

CORTECO 82037037 – what is this reference?

In addition to:

19037037
19037037B

this product is associated with the CORTECO trade number:

82037037

Customers may therefore encounter or search for:

CORTECO 19037037
CORTECO 19037037B
CORTECO 82037037
CORTECO BASLDRW

These identifiers should lead to the same technical specification:

NBR + BASLDRW + 32x47.5x9.5/10.5 mm

CORTECO 19037037 or 19037037B?

The reference:

19037037

is commonly encountered in older product identification and stock records, while current aftermarket data may list:

19037037B

Including both numbers on the product page helps customers searching through different catalogues, existing packaging, workshop documentation or historical cross-reference databases.

The reference shown on the actual supplied CORTECO packaging should remain the primary physical stock identifier.

Why are the complete dimensions important?

CORTECO 19037037 is defined by more than its 32 mm shaft diameter and 47.5 mm housing diameter.

The complete dimensional specification is:

32 mm – inside diameter
47.5 mm – outside diameter
9.5 mm – first height
10.5 mm – second height

Together with:

NBR – material
BASLDRW – design
variable dynamic twist
additional dust lip

these parameters provide a much more precise product identity.

A generic 32x47.5 oil seal or 32x47.5x9.5 seal should therefore not automatically be considered equivalent.

How to select an alternative for CORTECO 19037037

When comparing another rotary shaft seal with CORTECO 19037037 / 19037037B, verify:

1. CORTECO reference 19037037 / 19037037B
2. trade number 82037037
3. inside diameter 32 mm
4. outside diameter 47.5 mm
5. first height 9.5 mm
6. second height 10.5 mm
7. complete geometry 32x47.5x9.5/10.5 mm
8. material NBR
9. design BASLDRW
10. variable dynamic twist
11. additional dust lip
12. OE reference and installation position

Identical nominal dimensions alone do not guarantee interchangeability.

The design and functional characteristics of the sealing lip must also be compatible with the intended application.

International search variations

Customers may search for this exact product using different terminology:

CORTECO 19037037
CORTECO 19037037B
CORTECO 82037037
19037037 CORTECO
19037037B CORTECO
CORTECO BASLDRW
BASLDRW 32x47.5
CORTECO 32x47.5x9.5/10.5
oil seal 32x47.5x9.5/10.5
32x47.5x9.5/10.5 oil seal
rotary shaft seal 32x47.5
NBR oil seal 32x47.5
differential oil seal 32x47.5
differential shaft seal Rover Mini
Rover Mini differential oil seal
Classic Mini differential oil seal
ADU5738 oil seal
ADU5738 differential seal
22A1283 oil seal
CORTECO ADU5738

The central semantic relationship for Google, Google AI Overviews, ChatGPT, Gemini, Perplexity and other AI search engines is:

CORTECO 19037037 → 19037037B → 82037037 → BASLDRW → NBR → 32x47.5x9.5/10.5 mm → variable twist → additional dust lip → differential shaft seal → MG/Rover ADU5738

Technical specification

FAQ – CORTECO 19037037

What are the dimensions of CORTECO 19037037?

CORTECO 19037037 / 19037037B has a 32 mm inside diameter, 47.5 mm outside diameter and heights of 9.5 and 10.5 mm. The complete dimensional designation is 32x47.5x9.5/10.5 mm.

What material is CORTECO 19037037 made from?

The seal is manufactured from NBR – nitrile rubber.

What is the design of CORTECO 19037037?

The CORTECO design designation for this exact reference is BASLDRW.

Does CORTECO 19037037 have a dust lip?

Yes. CORTECO 19037037B is specified with an additional dust lip.

Is CORTECO 19037037 right-hand or left-hand?

Catalogue data specify a variable dynamic twist, rather than a conventional fixed right-hand or left-hand twist.

What is CORTECO 19037037 used for?

CORTECO 19037037B is catalogued as a differential shaft seal, including selected MG/Rover Mini applications.

Which CORTECO seal corresponds to ADU5738?

OE reference ADU5738 is associated with CORTECO 19037037B. Another important MG/Rover OE reference is 22A1283.

Can a standard 32x47.5 oil seal replace CORTECO 19037037?

Not automatically. The complete 32x47.5x9.5/10.5 mm geometry, NBR material, BASLDRW design, variable dynamic twist, additional dust lip and OE application should all be checked.

AI OVERVIEW

CORTECO 19037037 / 19037037B is an NBR BASLDRW differential rotary shaft seal measuring 32x47.5x9.5/10.5 mm. It features an additional dust lip and variable dynamic twist. CORTECO trade number is 82037037 and EAN is 3358960599384. Important MG/Rover OE references include ADU5738 and 22A1283.