CORTECO 12017098B RWDR-K7 NBR Cassette Seal 127x160x15.5/17.5 mm | Heavy-Duty Shaft Seal | JCB | Graziano Trasmissioni

What is the CORTECO 12017098B Cassette Seal?

The CORTECO 12017098B is a premium RWDR-K7 cassette shaft seal engineered for demanding heavy-duty applications. Manufactured from high-quality NBR (Nitrile Butadiene Rubber), it provides outstanding protection against lubricant leakage while preventing mud, dust, water and other contaminants from entering the bearing or transmission assembly.

Its advanced cassette construction integrates multiple sealing lips and protective barriers into a single unit, significantly extending bearing life and ensuring reliable operation in harsh environments. The seal is widely used in JCB construction machinery and Graziano Trasmissioni transmission systems.

Technical Specifications

Key Features

The CORTECO 12017098B offers:

• Advanced RWDR-K7 cassette sealing technology
• Premium NBR elastomer
• Excellent resistance to lubricating oils and grease
• Outstanding protection against mud, dust and water
• Multi-lip sealing system
• Extended bearing service life
• OEM-quality manufacturing
• Reliable performance in severe operating conditions

Typical Applications

The CORTECO 12017098B cassette seal is commonly used in:

• JCB construction equipment
• Graziano Trasmissioni gearboxes
• Drive axles
• Wheel hubs
• Planetary gear systems
• Agricultural machinery
• Industrial transmissions
• Heavy-duty powertrain systems

RWDR-K7 Cassette Technology

The RWDR-K7 design is specifically developed for applications exposed to severe contamination.

Its construction includes:

• Multiple sealing lips
• Integrated dirt exclusion system
• Lubricant retention barriers
• Reinforced metal casing
• Heavy-duty cassette architecture

This design provides superior protection against contamination while minimizing lubricant loss and extending bearing life.

Advantages of NBR Material

NBR (Nitrile Butadiene Rubber) provides:

• Excellent resistance to mineral oils
• High resistance to grease
• Good abrasion resistance
• Reliable sealing performance
• Long operational life
• Excellent elasticity
• Cost-effective OEM solution

OEM Cross Reference

Compatible OEM numbers:

• JCB – 904M6779
• JCB – 90450025
• JCB – 90450033
• GRAZIANO TRASMISSIONI – 3292083

FAQ

What are the seal dimensions?

The seal dimensions are 127 × 160 × 15.5/17.5 mm.

What does RWDR-K7 mean?

RWDR-K7 is a heavy-duty cassette shaft seal featuring multiple sealing lips designed for applications exposed to dirt, moisture and extreme operating conditions.

What material is used?

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

Which machines use this seal?

It is commonly installed in JCB construction equipment and Graziano Trasmissioni transmission assemblies matching the listed OEM numbers.

Is this an OEM-quality product?

Yes. CORTECO is one of the world's leading manufacturers of original-equipment sealing solutions.

Is it suitable for heavy-duty applications?

Yes. The cassette design is specifically developed for construction, agricultural and industrial machinery operating in harsh environments.

Frequently Asked Questions from Mechanics and Engineers

Why choose a cassette seal instead of a conventional oil seal?

Cassette seals combine multiple sealing elements and contamination barriers into one assembly, providing significantly better protection and longer bearing life.

Is NBR suitable for construction machinery?

Yes. NBR offers excellent resistance to oils, grease and mechanical wear, making it ideal for demanding off-road applications.

What are the most common causes of seal failure?

• Incorrect installation
• Damaged shaft surface
• Bearing wear
• Contamination
• Excessive shaft runout
• Improper installation tools
• Overheating