Applications of the CORTECO 12011381 Shaft Seal

The CORTECO 12011381 NBR B1DUO 17x28x8 radial shaft seal is designed for demanding industrial and automotive environments where reliable oil retention and protection against contamination are essential. This seal is commonly used in gearboxes, engines, pumps, drive units, agricultural machinery, and various industrial machines. Its B1DUO double-lip design ensures both effective sealing of lubricants and increased protection against dust and external particles.

Advantages and Construction of the B1DUO Seal

Manufactured from high-quality NBR (nitrile butadiene rubber), the 12011381 seal offers excellent resistance to oils, greases, fuels, and typical operating temperatures. The double-lip configuration enhances durability, stabilizes shaft operation, and extends service life by preventing lubricant loss and reducing wear on mating components. Precision dimensions 17x28x8 mm ensure secure seating in the housing and optimal contact pressure on the shaft surface.

Technical Data

• Manufacturer: CORTECO

• Part number: 12011381

• Design: B1DUO - double-lip

• Material: NBR (Nitrile Rubber)

• Dimensions: 17x28x8 mm

• Type: radial shaft seal / oil seal / rotary shaft seal

• Rotation direction: not specified - suitable for both directions

Main Description

The CORTECO 12011381 NBR B1DUO 17x28x8 radial shaft seal is a robust, double-lip oil seal engineered for systems requiring consistent sealing performance and long-term resistance to lubricants. Made from reliable NBR, the seal features strong resistance to mineral oils, greases, and typical operating media used in industrial and automotive applications. Its construction makes it an ideal solution for maintenance departments and machine manufacturers seeking components with proven durability and stable operation.

The B1DUO double-lip design ensures enhanced protection: the primary sealing lip retains oil and lubrication, while the secondary lip prevents dust, moisture, and contaminants from entering the system. This design significantly increases the lifespan of shafts, bearings, and rotating assemblies, especially in environments where machines operate in dusty or variable conditions.

With accurately manufactured dimensions of 17x28x8 mm, the seal fits securely in its housing and maintains proper radial pressure on the shaft, contributing to efficient operation and reduced wear. It is widely used in engines, gearboxes, agricultural machinery, pumps, industrial drives, and various rotary systems requiring high reliability and stable sealing performance.

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FAQ - Frequently Asked Questions

1. What is the difference between a single-lip and a double-lip shaft seal?

A double-lip seal includes an additional dust lip that blocks contamination, offering better protection in harsh environments.

2. When should NBR material be used?

NBR is ideal for applications involving oils, greases, and fuels within standard temperature ranges. It is the most universal compound for rotary shaft seals.

3. How do I choose the correct shaft seal size?

You must match the inner diameter (shaft size), outer diameter (housing size), and width to the original specification to ensure proper fit and performance.

4. Can this seal operate in both rotation directions?

Yes. The 12011381 model has no directional marking, making it suitable for clockwise and counterclockwise rotation.

5. What machinery typically uses this seal?

It is widely used in gearboxes, pumps, engines, agricultural machines, power transmission units, and industrial equipment.