CORTECO 12017298 54x82x8/11.5 NBR Oil Seal B1SLSF

Application - Shaft Oil Seal for Engines and Machinery

The CORTECO 12017298 54x82x8/11.5 oil seal is a precision rotary shaft seal (simmering) designed for automotive and industrial applications requiring reliable oil retention and contamination protection. With dimensions 54x82x8/11.5 mm, it is commonly used as a shaft seal in selected Mitsubishi and Volvo engine assemblies, as well as in various industrial drive systems.

As a rotary sealing solution without a defined rotation direction, this oil seal can operate in both clockwise and counterclockwise shaft movement. This makes it a versatile sealing component for service, repair and OEM industrial applications where installation flexibility is required.

B1SLSF Design - Reliable Technical Sealing

The B1SLSF (B1SL type) construction features a primary sealing lip and an additional dust lip, classifying it as a double lip oil seal. The main lip ensures effective oil sealing, while the auxiliary lip protects against dirt, dust and external contaminants.

Manufactured from NBR material, this shaft seal provides strong resistance to oils and greases under standard operating temperatures. The metal outer surface ensures secure positioning in the housing bore and stable press-fit installation.

As an original CORTECO product, this technical sealing component delivers high durability, dimensional accuracy and long-term operational stability in engine and machinery applications.

Technical Data

• Manufacturer: CORTECO

• Part number: 12017298

• Design: B1SLSF (B1SL type)

• Dimensions: 54x82x8/11.5 mm

• Material: NBR

• Rotation direction: No predefined direction

• Dust lip: Yes (double lip seal)

• Outer surface: Metal

• Application: Shaft oil seal, engine seal, rotary sealing system

OE cross references include Mitsubishi MB573309 and Volvo 308704113 / 30870411.

FAQ - Frequently Asked Questions

What is the difference between a single lip and double lip oil seal?
A double lip seal includes an additional dust lip to protect against contamination, while a single lip seal provides only primary oil sealing.

How do I select the correct oil seal size?
The first dimension (54 mm) corresponds to the shaft diameter, the second (82 mm) to the housing bore, and the third (8/11.5 mm) to the seal width.

Is NBR suitable for engine oil applications?
Yes. NBR offers good resistance to oils and greases within standard engine operating temperatures.

Does this seal require a specific rotation direction?
No. This model can operate in both rotational directions.