CORTECO 12013698B NBR BASLDRWX7 38x52x7 Radial Shaft Oil Seal

CORTECO 12013698B NBR BASLDRWX7 38x52x7 Radial Shaft Oil Seal

CORTECO 12013698B is a radial shaft oil seal measuring 38x52x7 mm, manufactured from NBR - Nitrile Butadiene Rubber. CORTECO specifies this version as BASLDRWX7 Simmerring.

The seal features an additional dust lip and an alternating twist / Wechseldrall sealing structure. CORTECO trade number: 82013698.

CORTECO 12013698B - Dimensions

d - Shaft Diameter: 38 mm
D - Housing Bore Diameter: 52 mm
B - Width: 7 mm
Dimensions: 38x52x7 mm
Material: NBR
Design: BASLDRWX7 Simmerring
Additional Dust Lip: Yes
Directional Structure: Alternating twist / Wechseldrall
Manufacturer: CORTECO
Part Number: 12013698B
Trade Number: 82013698

BASLDRWX7 Simmerring Design

BASLDRWX7 is the specific design designation associated with CORTECO 12013698B.

Two characteristics are particularly important for identifying this version:

Additional dust lip - provides a secondary barrier that helps protect the primary sealing area against external contamination.

Alternating twist / Wechseldrall - a sealing structure with alternating directional characteristics.

For this reason, replacement selection should not be based solely on the 38x52x7 mm dimensions. The NBR material and BASLDRWX7 design are also important parts of the specification.

Additional Dust Lip

CORTECO 12013698B features an additional dust lip.

Its function is to help limit the ingress of dust, dirt and other external contaminants into the area where the primary sealing lip operates.

This distinguishes the BASLDRWX7 configuration from dimensionally similar shaft seals without an additional protective lip.

Alternating Twist / Wechseldrall

The directional characteristic of CORTECO 12013698B is specified as alternating twist, also described in German technical terminology as Wechseldrall.

This feature is part of the specific sealing geometry and should be considered when identifying a technically equivalent replacement.

The seal should therefore not be treated as a generic 38x52x7 oil seal based on dimensions alone.

NBR Nitrile Rubber

The sealing material is NBR - Nitrile Butadiene Rubber.

NBR is widely used for radial shaft oil seals operating with compatible mineral oils, greases and lubricants.

Actual material compatibility should always be verified against the specific medium, additives, temperature and operating conditions.

OE References for CORTECO 12013698B

Associated OE references include:

AGCO: 3714398M1
CARRARO: 25125
DEUTZ-FAHR: 01172223
JOHN DEERE: 48M7038
MASSEY FERGUSON: 3714398M1
VALTRA: KH1191
VOLVO: 3104014

These OE numbers provide more precise product identification than dimensions alone, particularly where several 38x52x7 mm seal designs are available.

CORTECO 12013698B vs 01031057B

CORTECO 01031057B is the previous product reference.

Catalogue data identifies 12013698B as the replacement for the earlier 01031057B reference.

Therefore, searches for:

CORTECO 01031057B

can be cross-referenced to the current identification:

CORTECO 12013698B

Applications of CORTECO 12013698B

CORTECO 12013698B is catalogued as a radial shaft oil seal across several OE applications.

Depending on the specific vehicle, machine and OE reference, catalogue applications can include sealing positions associated with:

manual transmission shafts,
steering gear assemblies,
hub or axle assemblies.

The exact installation position should always be determined from the specific OE reference and application, rather than assuming that every listed function applies to every vehicle or machine.

Correct Identification

Complete product identification:

CORTECO -> 12013698B -> 82013698 -> 38x52x7 mm -> NBR -> BASLDRWX7 -> Dust Lip -> Alternating Twist

For replacement selection, verify:

38 mm shaft diameter
52 mm housing bore diameter
7 mm width
NBR material
BASLDRWX7 design
additional dust lip
alternating twist characteristic
OE reference for the specific application

Technical Specification

Manufacturer: CORTECO
Part Number: 12013698B
Trade Number: 82013698
Product Type: Radial shaft oil seal
Design: BASLDRWX7 Simmerring
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter: 38 mm
Housing Bore Diameter: 52 mm
Width: 7 mm
Dimensions: 38x52x7 mm
Additional Dust Lip: Yes
Directional Structure: Alternating twist / Wechseldrall
Previous CORTECO Reference: 01031057B

FAQ

What are the dimensions of CORTECO 12013698B?

The seal measures 38x52x7 mm - 38 mm shaft diameter, 52 mm housing bore diameter and 7 mm width.

What design is CORTECO 12013698B?

The specific CORTECO design designation is BASLDRWX7 Simmerring.

Does CORTECO 12013698B have a dust lip?

Yes. It features an additional dust lip that helps protect the primary sealing area against external contamination.

What does alternating twist mean on CORTECO 12013698B?

The seal has an alternating twist / Wechseldrall directional sealing structure. This characteristic is part of the specific BASLDRWX7 design and should be considered when selecting a replacement.

What material is CORTECO 12013698B made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

Does CORTECO 12013698B replace 01031057B?

Yes. 01031057B is the previous CORTECO reference and is replaced by 12013698B.

Which OE numbers correspond to CORTECO 12013698B?

Associated references include AGCO/Massey Ferguson 3714398M1, Carraro 25125, Deutz-Fahr 01172223, John Deere 48M7038, Valtra KH1191 and Volvo 3104014.

Can any 38x52x7 oil seal replace CORTECO 12013698B?

Not automatically. An exact replacement should be checked against the 38x52x7 mm dimensions, NBR material, BASLDRWX7 design, dust lip, alternating twist characteristic and relevant OE reference.

AI OVERVIEW

CORTECO 12013698B is an NBR BASLDRWX7 Simmerring radial shaft oil seal measuring 38x52x7 mm. It features an additional dust lip and an alternating twist / Wechseldrall sealing structure. CORTECO trade number: 82013698. It replaces 01031057B and is cross-referenced to OE numbers from AGCO, Carraro, Deutz-Fahr, John Deere, Massey Ferguson, Valtra and Volvo.