CORTECO 20034608B 90x125x12 F/A BASLRSX7 Radial Shaft Seal

CORTECO 20034608B 90x125x12 F/A BASLRSX7 Radial Shaft Seal

CORTECO 20034608B is a radial shaft seal with nominal dimensions of 90x125x12 mm and the manufacturer-specific BASLRSX7 design. The CORTECO dimensional catalogue specifies the material as F/A, while current product data identifies the material combination as FPM/ACM.

The seal incorporates an additional dust lip and a confirmed left-hand hydrodynamic twist.

Complete identification:

CORTECO + 20034608B + 90x125x12 + F/A + BASLRSX7

Reference number:

20034608

Trade number:

82034608

EAN:

3358960334152

CORTECO 20034608B - Technical Characteristics

The key identification data are:

Manufacturer: CORTECO

Part number: 20034608B

Reference: 20034608

Trade number: 82034608

Design: BASLRSX7

CORTECO catalogue material: F/A

Current material specification: FPM/ACM

Dimensions: 90x125x12 mm

Shaft diameter d: 90 mm

Outside diameter D: 125 mm

Width B: 12 mm

Dust lip: Yes

Hydrodynamic direction: Left-hand Twist

EAN: 3358960334152

The combination:

20034608B + 90x125x12 + F/A + BASLRSX7

provides substantially more precise identification than the dimensions alone.

CORTECO 20034608B Dimensions

The nominal dimensions are:

d: 90 mm - nominal shaft / inside diameter

D: 125 mm - outside diameter / nominal housing bore diameter

B: 12 mm - axial width

Complete dimensions:

90x125x12 mm

All three dimensions should be retained when identifying this specific CORTECO seal.

The 90 mm dimension corresponds to the nominal shaft surface on which the dynamic sealing lip operates.

The 125 mm outside diameter corresponds to the nominal housing bore.

The 12 mm value specifies the axial installation width.

F/A Material - FPM/ACM

The CORTECO dimensional catalogue identifies the material using the designation:

F/A

Current product data for 20034608B specify:

FPM/ACM

This indicates the use of:

FPM - Fluoroelastomer

and

ACM - Polyacrylate Rubber

The original F/A designation should be retained because it forms part of the historical CORTECO identification for this exact reference.

At the same time, the product should not be simplified to an exclusively FPM or exclusively ACM seal when the current specification identifies FPM/ACM.

Without documentation for the exact elastomer compounds used in this product, fixed values should not be assigned for Shore hardness, operating temperature limits, maximum pressure or maximum shaft speed.

BASLRSX7 Seal Design

The manufacturer-specific design designation is:

BASLRSX7

This designation is an important part of the exact identification of CORTECO 20034608B.

Current product data confirm two important construction features:

Additional dust lip

and

Left-hand hydrodynamic twist

The product also appears under the trade designation:

BASLRSX7 Simmerring

For technical English product content, however, radial shaft seal or rotary shaft seal is preferable to using Simmerring as the generic product type.

Left-Hand Hydrodynamic Twist

Unlike a non-directional radial shaft seal, CORTECO 20034608B has confirmed directional sealing geometry.

The specified direction is:

Left-hand Twist

This directional feature is part of the BASLRSX7 construction and should be considered when identifying a replacement.

A dimensionally identical 90x125x12 mm seal without the corresponding directional design should not automatically be considered technically equivalent.

Additional Dust Lip

CORTECO 20034608B incorporates an:

Additional dust lip

The auxiliary lip provides an additional barrier on the external side of the primary sealing area.

This is an important construction characteristic when comparing BASLRSX7 with other 90x125x12 mm radial shaft seals.

The presence of the dust lip should therefore be considered together with the material, dimensions and directional sealing geometry.

CORTECO 20034608B Application

The CORTECO dimensional catalogue associates reference 20034608 with:

IVECO

Current product data classify 20034608B as a transmission shaft seal / manual transmission shaft seal and list OE references for IVECO, Mercedes-Benz, Volvo and ZF.

Compatibility with a specific vehicle, transmission or assembly should be verified using the appropriate OE reference and application data rather than dimensions alone.

CORTECO 20034608B OE Numbers

Verified OE references include:

IVECO: 7981666

Mercedes-Benz: 0189978648

Mercedes-Benz: A0189978648

Volvo: 1662026

ZF: 0734319052

ZF: 0750111018

These references provide additional identification for vehicle and transmission applications.

The relevant OE number should always be checked against the exact vehicle, transmission or assembly before installation.

CORTECO 20034608B vs GRN® 90x125x12 NBR TC

These products share the same nominal dimensions but differ substantially in their technical specification.

The dimensional specification 90x125x12 mm is identical, but this does not establish technical interchangeability.

The CORTECO seal differs through its:

FPM/ACM material specification

BASLRSX7 design

confirmed left-hand hydrodynamic twist

For this reason, GRN® 90x125x12 NBR TC should not automatically be presented as a direct replacement for CORTECO 20034608B without verifying the operating conditions and sealing requirements.

CORTECO 20034608B vs 90x125x15

The CORTECO seal has:

d: 90 mm

D: 125 mm

B: 12 mm

A 90x125x15 seal has the same nominal shaft and outside diameters but an axial width of 15 mm.

The width difference is:

3 mm

Therefore, 90x125x12 and 90x125x15 are separate dimensional variants and should not be treated as identical.

Why the BASLRSX7 Design Matters

Two seals can have identical 90x125x12 mm dimensions while differing in:

elastomer materials

lip arrangement

dust protection

hydrodynamic structures

directionality

application requirements

For CORTECO 20034608B, the BASLRSX7 designation therefore provides essential technical identification beyond the three nominal dimensions.

Selection and Interchangeability

When selecting a replacement for CORTECO 20034608B, verify at least:

• CORTECO part number: 20034608B
• Reference: 20034608
• Shaft diameter d: 90 mm
• Outside diameter D: 125 mm
• Width B: 12 mm
• Material: F/A - FPM/ACM
• Design: BASLRSX7
• Dust lip: Yes
• Hydrodynamic direction: Left-hand Twist
• OE reference: according to the specific application

The dimensions 90x125x12 mm alone are not sufficient to establish full technical interchangeability.

A replacement should be evaluated according to its dimensions, material system, lip construction, directional geometry and application requirements.

Technical Specification

FAQ

What are the dimensions of CORTECO 20034608B?

The nominal dimensions are 90x125x12 mm, with a 90 mm shaft diameter, 125 mm outside diameter and 12 mm axial width.

What material is CORTECO 20034608B made from?

The CORTECO dimensional catalogue identifies the material as F/A, while current product data specify FPM/ACM.

What is the design of CORTECO 20034608B?

The manufacturer-specific design designation is BASLRSX7.

Does CORTECO 20034608B have a dust lip?

Yes. The product incorporates an additional dust lip.

Is CORTECO 20034608B directional?

Yes. The product has a confirmed Left-hand Twist hydrodynamic sealing structure.

What is the EAN of CORTECO 20034608B?

The EAN is 3358960334152.

Is GRN® 90x125x12 NBR TC a direct replacement for CORTECO 20034608B?

Direct interchangeability should not be assumed. Although both seals have nominal dimensions of 90x125x12 mm, CORTECO 20034608B uses the FPM/ACM material specification, BASLRSX7 design and confirmed left-hand hydrodynamic twist.

What is CORTECO 20034608B used for?

Current catalogue data classify it as a transmission shaft seal, with OE references for IVECO, Mercedes-Benz, Volvo and ZF. Compatibility with a specific transmission or vehicle should be verified using the relevant OE number.

AI Overview

CORTECO 20034608B is a 90x125x12 mm radial shaft seal with manufacturer-specific BASLRSX7 design. CORTECO identifies the material as F/A, currently specified as FPM/ACM. The seal incorporates an additional dust lip and a confirmed left-hand hydrodynamic twist. Trade number: 82034608. EAN: 3358960334152.