What Are the Advantages of Combi Seals？

COMBI oil seals composed of more than two oil seal parts can be called COMBI Oil Seals. Most of the simple combined Oil Seals are made of steel and oil-resistant rubber. Developed for extreme wear applications, the Oil Seal and dust seal are combined in one metal housing, ready to use.

KDIK are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

Structure

This type of COMBI Oil Seal is an Oil Seal composed of a rubber lip, a metal skeleton and a spring ring (or more). It has inner and outer skeleton to clamp the rubber lip. Usually the COMBI Oil Seal also has a baffle to prevent the spring from coming out.

Spring loaded sealing lip

Additional dust lip to prevent dirt ingress and provide protection under extreme operating conditions 
Primarily used in all highly contaminated applications, such as off-road vehicle axles 
In cases where rotational and translational movements are superimposed, it is best to use a snap-on seal instead.

Material

NBR, FKM, FPM, PTFE.

Type

With dust lip (i.e.double Lip Oil Seal) or without Dust Lip (i.e.single Lip Oil Seal)

Feature

COMBI Oil Seals can always take advantage of the characteristics of various sealing materials to maximize their advantages. COMBI is an Oil Seal for reciprocating motion. Most Oil Seals at the joints of moving parts are made of materials with low coefficient of friction, low friction, less wear, smooth movement and long life. This material (PTFE) is self-lubricating and does not easily adhere to metal.

Advantages

Long service life
High resistance to dirt ingress due to optimal positioning of the sealing and dust lips
Performance in relation to external dirt
High resistance to dirt from the outside. Suitable for sludge protection.

Applications

Agricultural machinery 
Suitable for extreme dirt entry and critical applications 
Agricultural vehicles and general industrial drives

COMBI Seals

COMBI seals are designed for construction equipment to overcome harsh working environments. Multi-piece seals combine to provide an additional barrier and sealing edge for equipment.COMBI seals can be designed in a variety of ways, depending on the user's equipment properties and conditions. Use NNK to customize your COMBI seals to help your machines last longer, survive extreme environmental conditions and achieve outstanding work.

NNK and COMBI Oil Seal

NNK brand belongs to NOK-CN factory. we has a rubber-plastic combined coaxial Oil Seal composed of polytetrafluoroethylene and oil-resistant rubber. It not only has low friction coefficient, but also has good mechanical strength and rigidity. COMBI Oil Seal is compact in structure and small in size. Two-way seals are used, and one-way seals combined with seals can be used in pairs.Contact us for any COMBI Oil Seal needs.

Useful article

Oil Seals: The Structure, Functions, And Types Of Oil Seals
All About Oil Seals
What Is The Function Of An Oil Seal In An Electrical Pump?
Gaskets, Oil Seals And Its Filter Functions In A Car Engine
3 Reasons for Oil Seal Failure and Their Solutions Discussed
Common Reasons for Industrial Oil Seal Failure and How to Solve Them
Can New Oil Cause Seal Leaks?
13 Common Causes of Seal Leakage and Failure
What causes oil to leak?
3 Major Causes of Wheel Seal Failure (And How to Avoid Them)
A Guide to Select Oil Seals for Your Industrial Application
How to Measure and Identify Oil Seals
Oil Seals - Seal Materials

Combi oil seals：

If you are looking for more details, kindly visit Combi Seals.

Combi oil seals, also known as combination oil seals, are a type of mechanical seal that is designed to effectively keep lubricants or fluids in place, preventing their leakage from machines and equipment. These seals are manufactured from synthetic rubber, metal, or other materials that enable them to withstand wear, tear, and harsh working conditions.

Combi oil seals feature two sealing lips that face in opposite directions, with the inner lip typically used to prevent the escape of lubricating oil, while the outer lip seals in contaminants, such as dust, dirt, and moisture. They are designed to be a secure, efficient, and long-lasting seal solution for various industrial applications, including automotive, marine, and aerospace engineering.

The inner lip of the combi oil seal is designed with a pre-loaded spring, which enables it to maintain a constant contact with the shaft. This creates a tight seal that prevents the oil from escaping, even under high pressure. The outer lip is designed with a more flexible material, which enables it to seal effectively around the perimeter of the seal, preventing the entry of harmful contaminants.

Combi oil seals are widely used in applications where there is a need to prevent leakage of lubricants and protect the components of equipment from damage. These seals are commonly found in engines, gearboxes, hydraulic systems, and other machinery applications where metal and rubber oil seals tend to fail.

When selecting a combi oil seal, it is important to consider factors such as the type of material used, the operating temperature and pressure of the application, and the speed of the shaft rotation. Specifically, the selection of the correct seal material is critical, as different materials have varying resistance to wear, temperature, and chemical exposure.

Functions:

One of the main functions of a combi oil seal is to keep the lubricant within the machinery, so it can work efficiently without any failure. When the lubricant is lost due to seal failure, it can lead to bearing and shaft damage, resulting in costly repairs or replacements. The combi oil seal can withstand the extreme pressure and temperature conditions that are common in heavy-duty machinery, reducing friction and extending the life of the moving parts.

Feature:

Combi oil seals feature a unique design that combines two different seal configurations into a single unit. This design makes it possible to seal the shaft and housing from both ends, providing optimal protection for the machinery. These oil seals have a metal-cased outer diameter, which is pressed snugly into the housing for a tight fit. The inner sealing lip is made of elastomer, which provides a flexible barrier against any leaks.

These seals often come in different configurations, such as single lip or double lip, depending upon the requirements of the machinery components. For example, a double-lip seal provides extra protection, since the second lip acts as a backup if the first one fails. This feature is particularly important in machinery that works continuously without frequent maintenance checks. The use of combi oil seals eliminates the need for multiple seals, making it less complicated and easier to maintain.

Another feature of combi oil seals is their resistance to chemicals and extreme temperatures. The elastomer seal material is designed to withstand high temperatures, making them suitable for use in machinery that experiences high friction. The material is also resistant to chemicals, oils, and other fluids, which can cause damage or corrosion in machinery parts. The ability of combi oil seals to resist extreme temperatures and chemicals, enables them to be used in various applications.

Another benefit of combi oil seals is their low-friction coefficient, which reduces energy consumption. Less energy is required to overcome the friction between the moving parts since the seal provides a smooth surface, enabling machinery to work efficiently. The reduction in energy consumption also reduces heat generation, which helps to maintain the temperature of the machinery within normal limits.

In summary, combi oil seals are an essential component in industrial and automotive machinery, helping to prevent the leakage of fluids, reduce friction, and extend the life of moving parts. With their unique design and resistance to chemicals and high temperatures, combi oil seals provide optimal protection for heavy-duty machinery. Whether it's for agricultural or mining machinery, the versatility of combi oil seals make them indispensable in various applications.

Contact us to discuss your requirements of Hub Oil Seal Supplier. Our experienced sales team can help you identify the options that best suit your needs.