EMI Gaskets & Shielding

EMI gaskets are used in many electronic devices that require shielding. These types of gaskets were previously only found in radio communication and military equipment, but as new equipment is made and the world changes we are finding an increase in EMI radiation in a variety of electronic equipment. Therefore we are seeing an increase in demand for these types of gaskets. 

They function by establishing a conductive path along seams and other openings in an electronic enclosure. The created covering then blocks potential difference across the shield surface and establishes a smooth current flow. Picture this, imagine the gaskets are like patches on the sail on a mast so that it can work properly. In this case the gaskets plug up the holes so that EMI radiation does not interfere with the operation.

To summarize, the primary functions of EMI gaskets are to:

• Isolate sensitive equipment from potential sources of EMI
• Reduce the amount of EMI leaking into or out of an equipment enclosure