Sealing the Deal: Maximizing Reliability and Productivity with the right sealing technology in Automotive & Industrial Sectors

Sealing technology plays a pivotal role in maintaining the reliability and productivity of automotive and industrial systems. From engines to industrial machinery, the choice of sealing technology can significantly impact performance, efficiency, and longevity.

Maximizing Reliability and Productivity

What Does Sealing Technology Involve?

Sealing technology involves the design, manufacturing, and application of seals to prevent the leakage of fluids or contaminants in mechanical systems. These seals are essential for maintaining proper functioning and efficiency while protecting sensitive components from damage or corrosion.

What are the Different Types of Sealing Technology?

Engine Seals:

Engine seals are crucial for preventing the leakage of oil, coolant, and other fluids in automotive engines. These help in 

  • maintaining engine efficiency, 
  • reducing emissions, and 
  • prolonging the lifespan of critical components. 

Choosing high-quality engine seals that can withstand the heat and pressure of combustion chambers is essential for optimal engine performance and reliability.

Transmission Seals:

Transmission seals are responsible for containing transmission fluid and preventing leaks in automotive transmissions. They play a crucial role in: 

  • ensuring smooth gear shifts, 
  • reducing friction, and 
  • preventing premature wear of transmission components. 

Selecting transmission seals with excellent sealing properties and durability is essential for maintaining transmission efficiency and reliability.

Wheel Bearings and Hub Seals:

Wheel bearings and hub seals are essential components in automotive wheel assemblies, providing support and protection against contamination and moisture ingress. Properly sealed wheel bearings and hub seals help

  • maintain vehicle stability
  • steer responsiveness, and
  • overall safety.

Choosing high-quality seals with effective sealing properties and resistance to harsh road conditions is essential for ensuring long-lasting performance and reliability.

different types of sealing technology

Climate Control Seals:

Climate control seals are used in automotive HVAC (Heating, Ventilation, and Air Conditioning) systems to prevent the leakage of refrigerant and ensure efficient cooling or heating. These seals play a vital role in

  • maintaining cabin comfort,
  • ensuring consistent air quality, and
  • energy efficiency.

Selecting climate control seals with superior sealing properties and resistance to temperature extremes is crucial for optimal HVAC system performance and reliability.

Industrial Machinery Seals:

In industrial sectors, sealing technology is essential for preventing leaks, contamination, and downtime in various machinery and equipment. Seals used in pumps, compressors, hydraulic systems, and other industrial applications must withstand high pressures, temperatures, and chemical exposure.

How to select the right sealing technology?

Choosing the right sealing technology tailored to specific industrial requirements is essential for maximizing productivity, efficiency, and profitability.

One of the critical factors in selecting the right sealing technology is its ability to withstand extreme temperatures and pressures. Automotive and industrial systems often operate in harsh environments where temperature fluctuations and high pressures are common. Seals must be designed and engineered to withstand these conditions to ensure reliable performance and prevent costly downtime.

It’s essential to work with trusted suppliers and manufacturers who offer a wide range of sealing solutions tailored to automotive and industrial needs. Conducting thorough testing and evaluation of seals in real-world conditions can help ensure optimal performance and reliability in the long run.


What are the methods of bearing sealing?

Bearing sealing methods include labyrinth seals, contact seals, and non-contact seals. Labyrinth seals use a series of grooves and ridges to create a tortuous path for contaminants, while contact seals utilize lip seals or rubber seals to physically block fluid ingress. Non-contact seals, such as shields or covers, provide a barrier without direct contact with the bearing surfaces.

What type of seal is used for bearings?

The type of seal used for bearings depends on the application requirements and operating conditions. Common types of seals include lip seals, labyrinth seals, rubber seals, and metal shields. Lip seals are commonly used for moderate-speed applications, while labyrinth seals are preferred for high-speed and high-temperature environments.

How are bearings sealed?

Bearings can be sealed using various methods, including integral seals, shielded bearings, and sealed bearings. Integral seals are integrated into the bearing design during manufacturing, while shielded bearings use metal shields to protect against contaminants. Sealed bearings feature rubber or synthetic seals that provide superior protection against moisture, dust, and other contaminants.

What is a bearing seal?

A bearing seal is a device or component used to prevent the leakage of lubricants and contaminants in a bearing assembly. It serves to protect the bearing from external elements such as moisture, dust, dirt, and debris, while retaining lubrication to ensure smooth operation and extended lifespan.

Why is PTFE used in bearings?

PTFE (Polytetrafluoroethylene) is commonly used in bearings due to its exceptional properties, including low friction, high temperature resistance, chemical inertness, and non-stick properties. PTFE coatings or seals reduce friction between moving components, improve wear resistance, and enhance the overall performance and longevity of bearings.

What is the use of PTFE in bearings?

PTFE is used in bearings to reduce friction, improve wear resistance, and enhance the performance and longevity of mechanical systems. PTFE coatings or seals provide a low-friction surface that minimizes energy loss, reduces heat generation, and extends the service life of bearings in various applications, including automotive, industrial, and aerospace.

What type of grease is in sealed bearings?

Sealed bearings are typically lubricated with high-quality grease specifically formulated for bearing applications. Common types of grease used in sealed bearings include lithium-based grease, synthetic grease, and specialty greases with additives for enhanced performance and protection against wear, corrosion, and extreme temperatures.

Do bearings need seals?

Seals are essential for protecting bearings from contaminants and retaining lubrication to ensure smooth operation and extended lifespan. While some bearings may be designed with integral seals or shields, additional external seals may be required to provide extra protection against harsh operating conditions, such as high temperatures, moisture, dust, and debris. Proper sealing is crucial for maximizing bearing performance, reliability, and longevity in automotive and industrial applications.


Oil Seals – Everything you need to know about

Shaft seals, dirt seals, grease seals, lip seals, and many other names are only a few of the many names given to oil seals. They are simple components used in rotary shaft machinery to keep oil from leaking and impurities like dust, dirt, and water out. However, an oil seal’s most crucial role is to safeguard all ball, sleeve, and roller bearing types found in rotating shafts. Additionally, the seals stop blending two fluids that shouldn’t mix, such as water and oil.

What are oil seals?

A mechanical tool called an oil seal keeps lubricant from leaking out of the machine. It accomplishes its goal by sealing the equipment’s moving and stationary parts. Additionally, it prevents impurities from getting inside the machine and shortens its lifespan, an important role it completes. Numerous oil seals exist, including PTFE lip oil seals, rubber fabric oil seals, and rotating V-seals. An oil seal kit is a set of oil seals with the necessary dimensions and desired characteristics. An oil seal kit is more cost-effective and advantageous than buying individual oil seals.

Types of oil seal NBC offer 

Oil or other seals can be used for grease and oil seals. A flexible lip, radial lip, or rotating shaft seal are different names for an oil seal. Single lip, double lip, triple lip, and four or more lips are frequent configurations. Double dust lip seal A seal with a garter spring design is the Double Dust Lip (DDL) seal. It has two dust lips, as the name would imply, plus a fluid lip with a garter spring to keep the lip firmly attached to the wear ring. Given the ongoing evolution of bearing seal designs, this seal would be considered a starting seal. For more than 50 years, this design has been the workhorse of the freight business; it still is in some regions. NBC Brenco Bearing Seal performs the fundamental task of keeping contaminants and grease out. Because of the garter spring, this seal would add the most torque and temperature to the bearing. Efficiency plus bearing seals Due to eliminating the fluid lip using poly inserts and rotors, the Efficiency Plus (EP) seal has a reduced torque value of fewer than 15 in-lbs. Although it features a triple dust lip rather than a double dust lip, the dust lip is still a molded component of the design. A labyrinth-like insert and rotor interlock each other to replace the fluid lip. NBC Brenco labyrinth provides excellent grease while lowering the torque required to rotate the seal. Other types of oil seal and grease seals include:
  • Single lip oil seal
  • Metal cased
  • All rubber or polymers
  • Internal orientation
  • External orientation
  • Axial orientation
  • Spring-energized
Purpose of oil seal
  • To serve as a physical barrier that keeps the lubricant in the designated area.
  • To stop the lubricating oil from leaking outside despite high oil pressure.
  • Act as a barrier to keep debris, contaminants, and other outside elements out of the system containing the lubricating oil.

Why is bearing a seal important?

Why are sealed bearings favored over the unsealed alternative? Why ought sealed ball bearings be preferred to unsealed ones? What advantages can sealed ball bearings offer?
  • Worry-free lubrication
  • No contact
  • Self-contained

What are bearing isolators?

Dynamic seals called bearing isolators are used to shield bearings from external impurities. They are revolving (rotor) and stationary (stator) elements. O-rings or strong seals are used in some bearing isolators, while they are constructed like labyrinths in others.
Different types of bearing seals
For many bearings, a good bearing seal is essential. Bearing seals perform a dual function by keeping lubricants from leaking out while preventing impurities from entering your parts. Both procedures can help your bearings last longer, but choosing the proper seals for your components is critical. Different types of bearing seals include:
  • Contact seals
  • No-contact seals
  • Labyrinth seals
Pick the proper seal for your bearing with the NBC bearing.
Several variables, including maximum temperatures, required lubricants, available space, and more, may influence your choice of bearing seal. Each factor can affect the type of bearing best for your application, the amount of material required, and other factors. Although the choice of seals is crucial to the effectiveness of your bearings, you don’t have to make that choice alone. Our experts at NBC bearings can collaborate with you to identify the bearings and bearing seals that provide the best, most affordable solution for your application, environment, and finished product.