How Does Combi Seals Work?

26 May.,2025

 

Cassette & Combi Seals - Sealing Technologies

How does a Cassette Seal work and what are its properties?

Cassette Seals are used in rotating applications. The cassette seal consists of a running tube that is statically attached to a shaft and an oil seal that dynamically seals on the running tube. The cassette seal is one piece and uses radial and axial sealing lips, the primary sealing lip of which is supported by a spring. Cassette seals are very rigid robust sealing systems and are used in harsh and polluted environments.

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What are the characteristics of a Cassette Seal?

  • Suitable for harsh and polluted environments
  • High friction due to the extra sealing lips
  • Easy assembly
  • Suitable when using unhardened and unground shafts

Where are Cassette Seals used?

  • Agricultural machinery
  • Pumping
  • Soil Preparation Machines
  • Gears
  • Cardan shafts

What does a Cassette Seal consist of?

  • Static seal inside (shaft)
  • Primary sealing lip
  • Spring
  • Space for grease lubrication
  • Interior Static Seal (housing)
  • Axial and radial dust lips

What materials are Cassette Seals available in?

  • NBR
  • FPM/FKM
  • EPDM

Resistant to high loads

Cassette seals and combination seals from Freudenberg have a very long service life and can withstand very extreme conditions. Because they can withstand extreme conditions, cassette and combi seals are widely used in the agricultural sector and black industry. For this we rely on a combination of our proven and successful Simmerring and a permanent counterpart. Thanks to the streamlined system solution with integrated labyrinth, the complete unit offers maximum protection against impurities that only a system of this type can achieve. The integrated counterpart meets the special requirements of a dynamic seal. Cassette and combi seals allow axial and rotational movements and are therefore extremely flexible.

Protection against dirt

Freudenberg cassette and combi seals have a high reliability and a long service life. They last a long time, especially under the toughest conditions. The cassette and combi seals consist of a patented Simmerring and an enclosed counterpart. This cartridge and combination seal design has numerous sealing elements in one component and offers excellent protection against external dirt. Bearings and rotating shafts are optimally protected, so no additional dirt seals are required.

Withstands the most challenging working conditions

Cassette and combi seals are used in many places such as construction sites, mining, agriculture or transportation. The work machines used there must withstand the most challenging environmental conditions: humidity, harsh weather conditions, huge temperature fluctuations, UV radiation, but also sand, mud and ozone. Therefore, Cassette Seals and Combi Seals must be reliable and must not fail under challenging working conditions. Freudenberg cassette and combi seals are always reliable, even under the most challenging working conditions: for example, they reliably protect wheel bearings of heavy machinery against water and impurities and at the same time keep the oil in the bearing. The seal combination combines maximum performance with maximum reliability.

Product Range

We offer cassette seals and combination seals from Freudenberg in various diameters and widths, which are always of the best quality and are very reliable. Our range of cassette seals and combi seals, including product and material information sheets, ordering options, prices and availability can be found on our website.

What are other possibilities for rotating applications?

  • V-ring
  • Oil Seal

Names of Cassette Seals

  • Cassette seal
  • Cassette seal
  • Double Seal

Do you know about combi oil seal?

What is combi oil seal:

What is a Combi Oil Seal? The combi oil seal is a unique sealing device that combines the advantages of both a lip seal and a mechanical seal into one integrated design. It utilizes a combination of materials and innovative engineering techniques to provide superior sealing performance, whether in low or high-pressure applications. This versatile oil seal offers reliable protection against contamination, leaks, and excessive friction, allowing your machinery to perform optimally and extend its lifespan.

Exceptional Sealing Performance: The combi oil seal is manufactured using advanced technology and premium-quality materials. It features a rubber or elastomer lip that is specifically designed to create a secure and tight seal when in contact with the rotating or oscillating shaft. The lip is carefully engineered to provide excellent sealing efficiency, effectively preventing the entry of dirt, dust, water, or any harmful substances into the machinery.

Product Description: Combi Oil Seal

Introducing the revolutionary Combi Oil Seal, the ultimate solution for all your sealing needs. With its exceptional design and cutting-edge technology, this oil seal offers unparalleled performance and reliability in various applications.

Function:

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The primary function of the Combi Oil Seal is to prevent the leakage of oil or other fluids from rotating or stationary shafts. It effectively seals the rotating shaft against harmful contaminants, ensuring smooth operations and extending the lifespan of machinery. This innovative seal is widely used in automotive, agricultural, and manufacturing industries, among others, where leakage prevention is crucial.

Features:

1. Durable Construction: The Combi Oil Seal is crafted using high-quality materials, making it highly resistant to wear, tear, and extreme operating conditions. It can withstand high temperatures, pressure differentials, and harsh chemicals, guaranteeing longevity even in the most demanding environments.

2. Dual-Lip Design: Unlike traditional oil seals, the Combi Oil Seal features a unique dual-lip design that offers two sealing lips in one unit. This design enhances sealing efficiency and provides double protection against oil leakage, effectively reducing the risk of breakdowns and expensive repairs.

3. Increased Reliability: With its advanced design, the Combi Oil Seal ensures optimal sealing performance, minimizing the escape of lubricants and preventing contaminants from entering the machinery. This reliable sealing mechanism improves operational efficiency and reduces maintenance costs associated with frequent breakdowns or fluid replacement.

4. Excellent Versatility: The Combi Oil Seal is suitable for a wide range of applications, including engines, transmissions, gearboxes, axles, pumps, and various industrial machinery. Its versatility combined with high-performance capabilities makes it the preferred choice for both OEMs (Original Equipment Manufacturers) and maintenance professionals.

5. Easy Installation: Designed for quick and hassle-free installation, the Combi Oil Seal eliminates the need for special tools or extensive technical knowledge. The seal is pre-lubricated and precisely sized to fit standard shaft diameters, allowing for seamless integration into existing systems.

6. Enhanced Efficiency: By effectively sealing the rotating or stationary shaft, the Combi Oil Seal prevents energy loss and improves overall system efficiency. This translates into reduced fuel consumption, lower operating costs, and environmentally friendly practices.

7. Superior Contamination Resistance: The Combi Oil Seal features a specialized debris-resistant lip that prevents the entry of dirt, dust, moisture, and other contaminants. This ensures the longevity of critical components within machinery, resulting in enhanced performance and reduced downtime due to maintenance.

8. Cost-effective Solution: The Combi Oil Seal offers exceptional value for money. Its competitive pricing, combined with superior performance and durability, makes it a cost-effective sealing solution for various industries. Reduced maintenance expenses and extended equipment lifespan further contribute to long-term cost savings.