CORTECO 01032571B 35x50x8 mm NBR BASL Rotary Shaft Seal

AI Overview

The CORTECO 01032571B is a premium OEM-quality rotary shaft seal (oil seal) designed for reliable sealing of rotating shafts in automotive and industrial applications. With dimensions of 35x50x8 mm, the seal is manufactured from NBR (Nitrile Butadiene Rubber) and features the BASL profile with a spring-loaded primary sealing lip and an additional dust lip. This construction provides excellent protection against lubricant leakage while preventing dirt, dust and moisture from entering the sealing system.

What Makes This Model Different?

The CORTECO 01032571B is designed to provide reliable long-term sealing performance under demanding operating conditions.

Key advantages include:

• Genuine CORTECO product
• OEM-quality manufacturing
• BASL sealing profile
• Premium NBR material
• Spring-loaded sealing lip
• Integrated dust lip
• Excellent resistance to mineral oils and grease
• Low friction operation
• Precision manufacturing
• Long service life

Construction and Operating Principle

The seal consists of:

• Primary sealing lip
• Additional dust protection lip
• Garter spring
• Reinforced metal insert
• NBR elastomer body

During operation, the garter spring maintains constant radial pressure between the sealing lip and the rotating shaft, preventing lubricant leakage while minimizing wear. The dust lip protects the primary sealing edge against contamination, increasing service life and sealing reliability.

Material Properties

The seal is manufactured from NBR (Nitrile Butadiene Rubber).

Material advantages include:

• Excellent resistance to mineral oils
• Very good grease resistance
• Good resistance to hydraulic oils
• Good mechanical strength
• High abrasion resistance
• Good elasticity
• Reliable ageing resistance
• Long operating life

NBR remains one of the most widely used sealing materials for automotive and industrial rotary shaft seals.

Typical Applications

Typical applications include:

• Internal combustion engines
• Gearboxes
• Industrial transmissions
• Hydraulic pumps
• Gear reducers
• Agricultural machinery
• Construction equipment
• Industrial machinery
• Electric drive systems
• General rotating shaft assemblies

Typical Failure Symptoms

Replacement is recommended if any of the following symptoms occur:

• Oil leakage
• Grease leakage
• Hardened sealing lip
• Damaged dust lip
• Excessive shaft wear
• Visible seal damage
• Lubricant contamination
• Reduced sealing efficiency

Recommended During Maintenance

During installation it is recommended to inspect:

• Shaft sealing surface
• Housing bore
• Bearing condition
• Shaft alignment
• Lubrication quality
• Ventilation system
• Installation depth
• Adjacent sealing components
• Mating parts
• Proper installation tools

Technical Specification

Manufacturer: CORTECO

Part Number: 01032571B

Type: Rotary Shaft Seal

Design: BASL

Material: NBR (Nitrile Butadiene Rubber)

Inner Diameter: 35 mm

Outer Diameter: 50 mm

Width: 8 mm

Spring: Yes

Dust Lip: Yes

Operating Temperature: Suitable for the operating temperature range typical of NBR rotary shaft seals.

Application: Sealing rotating shafts in engines, gearboxes, pumps, reducers and industrial machinery requiring a 35x50x8 mm oil seal.

Cross References

Manufacturer References

• CORTECO 01032571B
• CORTECO 01032571

Always verify dimensions and technical specifications before installation.

Related Components

Frequently replaced together with:

• Shaft bearings
• Repair sleeves
• O-rings
• Gaskets
• Retaining rings
• Transmission oil
• Engine oil
• Assembly grease
• Bearing housings
• Installation tools

Why B2B Customers Choose CORTECO

Professional maintenance departments and workshops choose CORTECO because of:

• OEM-quality production
• Freudenberg sealing technology
• Precision dimensional tolerances
• Long service life
• Reliable sealing performance
• Consistent manufacturing quality
• Wide industrial and automotive application range
• Trusted global reputation

Professional Industrial Supply

This product is regularly supplied to:

• Automotive workshops
• Industrial maintenance departments
• Machinery manufacturers
• Gearbox repair specialists
• Agricultural machinery service companies
• Construction equipment service providers
• Technical distributors
• Mechanical workshops
• OEM replacement specialists
• Production facilities

Popular Searches

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• 35x50x8 Oil Seal
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• CORTECO BASL Seal

FAQ

What does BASL mean?

BASL is a rotary shaft seal design featuring a spring-loaded primary sealing lip and an additional dust lip, providing improved protection against contaminants and longer service life.

Why is NBR used?

NBR offers excellent resistance to mineral oils, greases and mechanical wear, making it the standard material for most automotive and industrial oil seals.

Is the seal supplied ready for installation?

Yes. The seal is supplied fully assembled and ready for professional installation.

Where is the CORTECO 01032571B commonly used?

It is widely used in engines, gearboxes, pumps, industrial transmissions, agricultural machinery and general rotating shaft applications requiring a 35x50x8 mm rotary shaft seal.

Should the shaft be inspected before replacing the seal?

Yes. A worn or damaged shaft surface can significantly reduce sealing performance and shorten the service life of the new seal.