EMI Shielding

What is EMI Shielding?

EMI shielding is the practice of blocking electromagnetic interference, preventing it from damaging sensitive electronic devices. Sealing Devices distributes a wide range of EMI shielding products, including EMI-shielded vents, gaskets, and windows.

Why is EMI Shielding Important?

EMI shielding creates a barrier that prevents strong electromagnetic fields from interfering with sensitive devices and signals. EMI can cause minor to major disruptions and malfunctions to electronic devices, equipment, and many other systems that are used in critical applications.

What Products Use EMI Shielding?

Any sensitive electronic system can benefit from the protection of EMI shielding. Common applications include aerospace electronics, military devices, mass transit systems, industrial touch screens, navigation, and vehicular control systems.

How Do You Choose the Right EMI Shielding Solution?

The right EMI shielding O-ring or gasket for your solution depends on several factors, including:

• The radiated emission spectrum of your equipment, as EMI shielding effectiveness varies across a frequency range of 10 kHz to 20 GHz.
• The operating environment, including high and low temperatures, wind, rain, salt spray, solvents, and other potentially damaging conditions.
• Mechanical design considerations, as an improper seal or enclosure flange design can prevent proper mating of the gasket.
• Compression requirements, with conductive filled elastomers requiring a higher compressive load than fabric-over-foam solutions.
• Installed cost, as installation can significantly impact overall costs. A faster, easier installation process typically means lower expenses.

What Configurations Does EMI Shielding Come In?

Common EMI shielding configurations include EMI shielded gaskets, windows, adhesives, and vents, each with its own advantages and ideal use cases.