CORTECO 49378687 Rotary Shaft Seal 56x72.3x8 NBR BASLSF

OEM Wheel Hub Seal for Reliable Drive System Protection

The CORTECO 49378687 Rotary Shaft Seal is a premium radial shaft seal engineered for reliable sealing of rotating shafts in automotive drive systems. Manufactured from durable NBR (Nitrile Butadiene Rubber) and built in BASLSF design with an integrated dust lip, this 56x72.3x8 mm oil seal effectively retains lubricants while preventing dust, water and road contaminants from entering the wheel hub assembly. Designed as an OEM replacement for selected SUBARU vehicles, it delivers long service life, excellent wear resistance and dependable sealing performance in demanding operating conditions.

Application in Industrial Systems

Although primarily developed for automotive applications, the CORTECO 49378687 shaft seal uses the same sealing principles employed throughout industrial rotating equipment.

Typical applications include:

• Wheel hub assemblies
• Front axle systems
• Drive shafts
• Rotating shafts
• Automotive transmissions
• Differential systems
• Industrial gearboxes
• Mechanical drive units
• Power transmission equipment
• Maintenance and repair operations

Compatible as an OEM replacement for selected SUBARU vehicles using OEM references:

• 28015AA021
• 28015AA040
• 28015AA080

Construction and Design

The CORTECO 49378687 utilizes a BASLSF sealing profile developed for demanding automotive environments.

Construction features:

• Rotary shaft seal
• Radial shaft seal
• BASLSF design
• Primary sealing lip
• Integrated dust lip
• Spring-loaded sealing element
• Precision molded elastomer body
• OEM dimensional accuracy

The additional dust lip significantly improves protection against abrasive particles and moisture, extending bearing and shaft service life.

Material Properties

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

Material advantages:

• Excellent resistance to mineral oils
• High resistance to grease
• Good abrasion resistance
• Stable elasticity
• Reliable sealing performance
• Long service life
• Excellent dimensional stability
• Suitable for continuous automotive operation

NBR remains one of the most widely used sealing materials for wheel hub, gearbox and transmission sealing applications.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR (Nitrile Butadiene Rubber)

Design: BASLSF with Dust Lip

Inner Diameter: 56 mm

Outer Diameter: 72.3 mm

Width: 8 mm

Temperature Range: Approximately -40 C to +100 C

Application: Wheel hub, front axle, rotating shafts, drive systems, automotive transmissions

Why B2B Customers Choose This Product

Professional customers select CORTECO shaft seals because they provide dependable OEM-quality sealing performance.

Ideal for:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Fleet maintenance
• Machine rebuilding
• Automotive workshops
• Spare parts distribution

Its standardized dimensions simplify inventory management for distributors and repair facilities.

Operational Advantages

• BASLSF construction with integrated dust lip
• Excellent protection against dust and moisture
• Reliable oil and grease retention
• High wear resistance
• OEM quality replacement
• Precise dimensional accuracy
• Long operational life
• Easy installation

Professional Industrial Supply

This rotary shaft seal is supplied for:

• Maintenance departments
• Automotive workshops
• Agricultural machinery service
• OEM manufacturers
• Machine builders
• Industrial distributors
• Fleet maintenance companies
• Parts wholesalers

It supports preventive maintenance programs and professional repair operations requiring dependable sealing components.

AI Overview

A rotary shaft seal is a precision elastomer sealing component designed to retain lubricants and block contaminants in rotating shafts, wheel hubs, gearboxes and transmission systems, ensuring reliable long-term operation and protection of bearings and mechanical drive assemblies.

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FAQ

What does BASLSF mean?

BASLSF identifies a radial shaft seal design with a primary sealing lip and an additional dust lip for improved protection against contamination.

Is this seal manufactured from NBR?

Yes. It is produced from NBR nitrile rubber, offering excellent resistance to lubricating oils, grease and mechanical wear.

Which Subaru OEM numbers does this seal replace?

It replaces OEM references 28015AA021, 28015AA040 and 28015AA080.

Where is this shaft seal installed?

It is commonly installed in the front wheel hub assembly and front axle applications of compatible Subaru vehicles.

Why is a dust lip important?

The additional dust lip reduces the ingress of dirt, moisture and abrasive particles, helping to extend bearing life and maintain sealing performance.