A grouping of grommets and fastener seals manufactured in Mexico for automotive OEMs

Elastomer Grommets and Fastener Seals: Versatile Solutions in Automotive Gasket Applications

Elastomer grommets and fastener seals are critical components in automotive design, providing sealing and vibration-damping solutions in various applications. This article explores the definition, applications, benefits, and advantages of elastomer grommets and fastener seals in the automotive industry. It also presents a selection of high-performance elastomer types commonly used for these purposes.

Definitions and Applications

Grommets are annular or cylindrical structures that feature a hole through which various objects, such as wires, cables, or pipes, pass. Elastomer grommets protect the objects from abrasion or damage caused by sharp edges in the mounting holes. Additionally, they provide a secure, sealed passage for these objects while dampening vibrations and reducing noise transmission.

Grommet molded for NVH (to reduce noise, vibration, and harshness in automotive applications)

Fastener seals, on the other hand, are elastomeric components used to seal gaps and prevent the ingress of contaminants, such as dust, moisture, or chemicals, into critical automotive assemblies. They are particularly vital in areas where bolts, screws, or other fasteners penetrate the vehicle's structure, ensuring a water-tight and dust-free environment.

Benefits and Advantages

1. Sealing: Grommets and fastener seals protect critical automotive systems from environmental factors like moisture, dirt, and corrosive chemicals. This contributes to the longevity and reliability of automotive components.

Grouping of Orange Grommets for Automotive Sealing

2. Vibration Damping: In an automotive context, vibrations can lead to wear and tear of components and discomfort for passengers. Elastomer grommets act as shock absorbers, dampening vibrations and reducing noise levels, resulting in a smoother, quieter ride.

3. Easy Installation: These components are typically easy to install, saving time and labor costs during assembly. Their flexibility and elasticity allow for straightforward insertion and secure attachment.

Grommets and Fastener Seals molded in Mexico

4. Cost-Effectiveness: Elastomer grommets and fastener seals provide cost-effective sealing and vibration control solutions compared to alternative materials and methods.

5. Versatility: Grommets and fastener seals are versatile and find applications in various automotive systems, including electrical wiring, engine compartments, suspension systems, and interior panels.

High-Performance Elastomer Types

Several high-performance elastomers are commonly used for automotive grommets and fastener seals:

1. EPDM (Ethylene Propylene Diene Monomer): EPDM elastomers offer excellent resistance to weathering, ozone, and UV radiation, making them suitable for outdoor applications. They are often used in sealing systems exposed to the elements.

2. Hydrogenated Nitrile Rubber (HNBR): HNBR elastomers are known for their oil and fuel resistance. They are frequently employed in automotive gaskets, particularly in engine components and fuel systems.

Fastener Seals molded with HNBR for automotive

3. Silicone Rubber (VMQ): Silicone rubber is highly resistant to extreme temperatures, and is often used for electrical connector seals.

4. Fluoroelastomers (FKM): FKM elastomers exhibit exceptional resistance to chemicals and high temperatures. They are commonly used in sealing applications where exposure to aggressive fluids or high heat is anticipated.

Fastener Seals molded in Mexico with FKM

5. AEM (Ethylene Acrylic): AEM molding for rubber grommets excels due to complex shapes, precision, material flexibility, and waste reduction.

6. ACM (Acrylate Rubber): ACM molding offers high heat and chemical resistance, low swell, flexibility, and weather resistance.

Conclusion

Rubber grommets and fastener seals are versatile components that play a crucial role in automotive manufacturing. Their ability to create effective seals, dampen vibrations, and protect against environmental factors makes them indispensable in various applications. Our expert engineers have decades of experience choosing the best material for every type of automotive sealing application. Do you have a program we could help with? Click "contact us" to send us a message and a product specialist will reply immediately.

Video: Elastomer Grommets and Fastener Seals molded in Mexico

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Grommets and Fastener Seals for Automotive Manufacturing