CORTECO 19035018 Rotary Shaft Seal 17x34x4 NBR SC

Application - Compact Rotary Shaft Seal for Automotive Systems

The CORTECO 19035018 17x34x4 NBR SC is a precision rotary shaft seal designed for compact automotive and industrial assemblies. This oil seal functions as a shaft sealing ring that ensures effective oil retention in dynamic systems with limited installation space.

It corresponds to OEM references Mercedes A0069976647 and 0069976647, making it suitable for selected Mercedes drivetrain and auxiliary systems. With its compact 17x34x4 mm dimensions, the seal is engineered for applications where precise fitment and low-profile construction are critical.

Thanks to its design without a defined rotation direction, this rotary seal can operate reliably in both clockwise and counterclockwise shaft movement, simplifying installation and reducing mounting errors.

Advantages of SC Design and NBR Material

The SC designation refers to a single lip oil seal equipped with a garter spring for consistent radial load on the shaft. As a single lip oil seal, it is optimized for retaining lubricant on one side while minimizing friction.

Manufactured from NBR (nitrile butadiene rubber), the seal provides good resistance to oils and grease and stable performance within standard automotive temperature ranges. The BA-type construction with an elastomer-coated outer diameter ensures improved static sealing in the housing bore.

Key performance features:

• Reliable rotary shaft seal performance in compact assemblies

• High durability under normal operating conditions

• Strong resistance to oils and grease

• Low friction due to single lip design

• Precise fit for 17 mm shaft diameter

This makes it a dependable technical seal within hydraulic and automotive seals, particularly in light-duty engine and gearbox systems.

Technical Data

• Manufacturer: CORTECO

• Part number: 19035018

• Alternative reference: 19035018B

• Type: Rotary shaft seal / Oil seal

• Design: SC (single lip with spring)

• Construction: BA, elastomer-coated outer surface

• Inner diameter (d): 17 mm

• Outer diameter (D): 34 mm

• Width (b): 4 mm

• Material: NBR

• Rotation direction: No specific rotation direction

• OEM references: Mercedes A0069976647, 0069976647

Additional Information - Seal Design and Materials

The BA construction indicates a metal insert with an elastomer outer coating, improving housing fit and static sealing performance. NBR is widely used in automotive shaft seals due to its balanced cost-performance ratio and compatibility with common lubricants.

Manufacturer Information (GSPR)

Responsible manufacturer: Corteco GmbH
Address: Badener Str. 4, 69493 Hirschberg, Germany
Email: service@corteco.de

FAQ - Frequently Asked Questions

What is the difference between single lip and double lip oil seals?
A single lip oil seal retains lubricant on one side, while a double lip oil seal includes an additional dust lip for improved contamination protection.

Is NBR suitable for engine applications?
Yes, NBR is commonly used in engine and gearbox sealing systems where operating temperatures are within standard ranges.

How do I select the correct rotary shaft seal size?
Match the inner diameter to the shaft (17 mm), the outer diameter to the housing bore (34 mm), and confirm the width (4 mm) according to OEM specification.

Can this seal be used in industrial applications?
Yes, provided operating conditions are within NBR material limits. It is suitable for light industrial rotary sealing applications.