What is an automotive seal?

An automotive seal is an essential mechanical component that ensures sealing between different parts of a vehicle. Its main function is to prevent the leakage of fluids (oil, coolant, fuel, brake fluid, etc.) and to protect internal components from external contaminants such as water, dust or mud.

Seals are found throughout a vehicle, including :

• the engine,

• the transmission,

• the braking system,

• doors and bodywork elements.

In our catalogue, you can find automotive seals from well-known brands such as CORTECO and SKF, along with flexible purchasing options and limited stock availability on certain models.

What are the different types of automotive seals?

There are several types of seals, each designed to meet a specific need. Every model has a unique reference number to simplify identification and purchasing.

The main types of seals

Head gasket

Ensures sealing between the engine block and the cylinder head, preventing oil or coolant leaks.

Rotary shaft seal (SPI seal)

Used for rotating parts (shafts, wheels, etc.), it prevents fluid leaks.

O-ring seal

A circular seal commonly used in hydraulic systems to guarantee perfect sealing.

Bodywork seal

Located around doors, windows and windshields, it prevents water and air infiltration.

What are the characteristics of an automotive seal?

Automotive seals differ based on several key characteristics that determine their performance and durability.

The main characteristics

1. Material

Seals may be made of :

• rubber,

• silicone,

• polyurethane,
  each offering specific levels of flexibility, resistance and longevity.

2. Shape and dimensions

Seals exist in a wide variety of shapes and sizes to fit precisely on the areas they must seal.

3. Sealing and protection

They prevent the entry of water, dust and contaminants, protecting internal components.

4. Weather resistance

Quality seals must withstand :

• rain,

• snow,

• heat,

• cold,
  without losing efficiency.

5. Resistance to shocks and vibrations

Seals must withstand frequent shocks and vibrations during driving to maintain proper sealing.

What materials are used for automotive seals?

Each material has its own specific properties and benefits :

Rubber

Flexible and resistant, commonly used for door, window and windshield seals.

Silicone

Highly flexible and resistant to extreme temperatures, ideal for applications requiring high elasticity.

Polyurethane

Very robust and abrasion-resistant, ideal for harsh environments.

Why are automotive seals important?

Seals are essential for the proper functioning of a vehicle for several reasons :

1. Preventing leaks

They prevent leaks of oil, fuel or brake fluid, which could cause major breakdowns.

2. Protecting internal parts

They block dust, water and mud from entering, preventing premature wear of mechanical components.

3. Improving system durability

By maintaining proper sealing, seals extend the lifespan of vehicle components.

How to choose the right automotive seal?

Choosing a seal depends on several criteria :

Application type

Engine, transmission, brakes, bodywork… each area requires a specific seal.

Operating conditions

Temperature, pressure and exposure to chemicals influence the choice of material.

Environment

Humid, dusty or extreme conditions require more resistant seals.

At 123Bearing, we offer a wide range of seals for :

• passenger vehicles,

• agricultural machinery,

• industrial equipment.

You’ll find SPI seals, O-rings, head gaskets and many other references to ensure optimal sealing of your mechanical systems.

How to maintain and replace automotive seals?

Regular maintenance is essential to ensure optimal performance.

Regular inspection

Identify cracks, distortions or damaged areas.

Cleaning

Remove dust and contaminants using appropriate cleaning products to preserve the integrity of the seal.

Replacement

Seals should generally be replaced every 5 to 10 years, or earlier if signs of wear appear.

By following these tips, you extend the lifespan of your automotive seals and improve your vehicle’s safety and comfort.