Sealing Systems and Closures

Fairchild’s expertise in providing cost effective weatherstrip and closure sealing systems is why OEMs partner with us from design, development, and distribution of these seals.

Sealing systems play a crucial role in a vehicle in order to prevent the entry of external elements like water, wind, dust, and noise, ensuring a comfortable and controlled environment inside the vehicle. These sealing systems also contribute to the overall safety and structural integrity of the vehicle by providing additional reinforcement and reducing the likelihood of rattles and vibrations.

Vehicular Sealing Systems and Closures: Types of Seals

There are two main types of seals used in vehicular sealing systems and closures: static seals and dynamic seals.

Static Seals: Ensuring Smooth Movement and Protection

Static seals are positioned where no relative motion occurs between the mating surfaces. They smoothly guide the glass up and down, effectively preventing external elements from entering the vehicle. Common types of static seals include:

Glass Run Channels or Glass Run Guides: Positioned around the window glass, these seals enable smooth movement while providing a seal against external elements.

Beltline Weatherstrips or Waist Belts: Found where your arm rests when the window is down, these seals allow the window glass to move up and down while sealing out external elements.

Dynamic Seals: Keeping the Elements Out with Minimal Effort

Dynamic seals are located between the door or hood and the vehicle body, creating a secure seal with minimal effort to keep outside elements at bay. Common types of dynamic seals include:

Door Seals: Positioned around the perimeter of the vehicle’s doors or door surround on the body, ensuring a tight seal when the doors are closed.

Trunk Seals: Creating a barrier between the trunk lid and the vehicle body, keeping water and dirt out.

Roof Seals: Used to seal the gaps between the roof panel and the vehicle body, preventing water leaks and reducing noise.

Hood Seals: Located around the engine compartment’s perimeter, these seals allow the hood to open and close while sealing against noise, dust, and water.

Versatile Materials for Effective Sealing Systems

Materials used for sealing systems vary based on specific applications and desired properties. Common materials include:

1. EPDM (Ethylene Propylene Diene Monomer)

A synthetic rubber renowned for its excellent resistance to UV exposure, ozone, and extreme temperatures.

2. TPE (Thermoplastic Elastomer)

TPEs offer a balanced combination of flexibility and durability, making them easily moldable into various shapes.

3. Sponge or Foam

Often made of EPDM or Neoprene, foam materials are ideal for compression seals, providing cushioning and sealing capabilities.

4. PVC (Polyvinyl Chloride)

Used in specific applications for its cost-effectiveness, good weather resistance, and ease of molding.

Secure Fastening Techniques for Sealing Systems

Fastening methods for sealing systems and closures vary based on design and application. Common fastening techniques include:

1. Adhesive

Weatherstripping components are often attached using adhesive tapes. These tapes are pressure or heat applied to the seal and adhered to the application surface. Adhesive-backed seals allow for easy installation and provide a secure bond.

2. Clips and Retainers

Some seals, especially those on doors and windows, may utilize clips or retainers that snap into place or are screwed onto the vehicle’s structure. Off-the-shelf clips can often be used, tailored to the vehicle’s requirements.

3. Mechanical Fasteners

Screws, bolts, or rivets may be used to secure the seals to the vehicle. This method is more commonly employed for newer belt weatherstrips that require cropping and secure placement.

If you are in need of sealing system solutions, please reach out to us, and we will be happy to explore how we can assist you!