Shielding Gaskets

EMI shielding gaskets are designed to protect electronic equipment from harmful electromagnetic interference (EMI) and radio frequency interference (RFI).

By creating a conductive path along the seams and other openings in an electronic enclosure, these gaskets establish smooth current flow and prevent destructive radiation from interfering with performance by completing a Faraday cage around the electronics.

EMI/RFI disturbances can destroy or disrupt electrical circuits, making EMI/RFI shielding gaskets a necessary component for a wide range of electrical equipment. There are many types of EMI/RFI shielding gaskets on the market, and they can be made from many materials, including plastic, foam, metals, and elastomers. It’s important to understand the various types so that you can select the appropriate shielding solution for your application

Dual Elastomer EMI shielding gaskets

Vanguard’s VanshieldTM, Ultra-Vanshield™ and MICROBRIDGE™ dual elastomer shielding gaskets are made with quality silicone, EPDM, and fluorosilicone materials and comply with MIL-DTL-83528 for use in a wide range of mission-critical applications.

Our capabilities include in-house formulation, mixing, and testing, as well as secondary operations such as cutting, bonding, and O-ring fabrication.

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Single Filled Elastomers

Knitted Mesh Gaskets

Stamped Spring Finger Gaskets

Through our leading suppliers EG Electronics can offer the most complete range of standard EMI shielding strips in the industry. These RoHS-compliant shielding strips are designed for a wide variety of application requirements.

They are available in strips ranging from 16 to 24 inches in length, in continuous coils up to 35 feet long, as single fingers, or custom-cut to requested full-finger length

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EPDM Gaskets

Vanguard EPDM Gaskets from Vanguard Products Corporation offer superior sealing solutions. Engineered with high-quality EPDM elastomers, these gaskets provide excellent weather and ozone resistance. Ideal for diverse applications, ensuring reliable and durable performance.

EPDM has a polymer structure that makes it well equipped to withstand many environmental factors, such as UV and ozone exposure. EPDM tubing is cost competitive with silicone rubber and also features a higher tear strength. The primary limitation to EPDM rubber is its operational temperature range. EPDM tubing typically can’t handle temperatures much higher than 300°F or lower than -30℉. EPDM is also prone to swelling if exposed continuously to oil.

Gaskets for Cards & Cages

DynaGreen^® / DynaShear Gaskets an innovative EMI shielding gasket family for the shielding of modules in card/cages environment that is able to offer superior features over metal fingerstocks and current Fabric-Over-Foam gaskets.

DynaGreen^® / DynaShear utilizes the, now famous and efficient, bump technology. DynaGreen^® is a halogen-free version of DynaShear which is in compliance with IEC 61249-2-21

Conductive Fabric Over Foam

Schlegel Electronic Materials has always been on the forefront of fabric over foam technology. Today fabric over foam continues to be at the core of our product line. We offer a variety of fabrics including:

NiCu-C22: Nickel-Copper plated polyester ripstop fabric with Schlegel protective top coating.
NiCu-C70: Nickel-Copper plated polyester ripstop fabric with Schlegel protective top coating.
NiCu-C12: Nickel-Copper plated polyester plain weave fabric with Schlegel protective top coating.
SnCu-C50: Tin Copper plated nylon plain weave fabric with Schlegel protective top coating.
Ag-C2: Silver plated nylon ripstop fabric with Schlegel protective top coating.

Fabric Over Silicone Gaskets

Fabric over Silicone EMI Gaskets (FoS) for high temperature applications. Fabric over Silicone EMI gaskets provide low compression forces, low compression set and an operating temperature that can be up to 125℃

Types of EMI Shielding Gaskets

To suit different applications, industries, and environmental conditions, Vanguard offers the following types of EMI/RFI shielding gaskets and conductive gaskets:

Silicone EMI Gaskets

Silicone is an ideal gasket material because it offers resistance to high and low temperatures as well as excellent tensile strength, compression set, and tear strength. This long-lasting material is also resistant to aging, fire, water, ozone, chemicals, and fungal growth.

Generally, silicone EMI shielding gaskets are the right choice for most applications and industries; however, EPDM or fluorosilicone may be the superior option for more demanding environment

EPDM EMI Gaskets

EPDM has a higher tensile strength than silicone. It also functions well in high and low temperatures and offers resistance to abrasion, oxidation, ozone, UV, acids, alkalis, water, and harsh weather conditions.

The properties of EPDM make it ideal for outdoor environments, military applications, and other complex settings.

Fluorosilicone EMI Gaskets

Fluorosilicone is resistant to oil, fuel, chlorinated and aromatic hydrocarbons, UV, and ozone. It also features a good compression set and can perform well over a broad range of temperatures.

Because of their material properties, fluorosilicone EMI shielding gaskets are popular for aerospace and military electronics as well as other demanding applications

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