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electrically conductive gasket

electrically conductive gasket

At NEDC, we cut a lot of interesting materials. One of the most commonly used gasketing materials are EMI/RFI Shielding Gaskets. They feature high levels of electrically conductivity imparted by their fillers, and low electrical impedance. Many of these gasket materials are certified to the MIL-DTL-83528. There are two main types of electrically conductive gaskets:

-Electrically Conductive Silicone Gaskets

-Electrically Conductive Fluorosilicone Gaskets

In this blog post, we discuss a few different types of electrically conductive silicone gaskets. Typically, EMI/RFI gaskets are used in enclosures, or connector gaskets(M83528/004XXXX). For silicone-based elastomers, the most commonly used connector gasket material for us is silver/aluminum in silicone(Type B)(M83528/XXXBXXX).

Electrically Conductive Tapes

When a customer orders an electrically conductive gasket, it will require an electrically conductive transfer tape such as 3M 9703, or 3M 9713. Of course, there are both acrylic and silicone transfer tapes available. Since NEDC is a 3M converter, we have access to all of the electrically conductive tapes offered by them. These different tapes aid in putting together components during assembly. NEDC can apply both silicone and acrylic based tapes to EMI/RFI shielding gasketing materials.

Compositions of Gaskets

MIL-DTL-83528 Type Filler Type dB of shielding, planewave Hardness Durometer Type A +/- 7
B Silver/Aluminum 100dB @ 10GHz 75A
M Silver/Glass 100dB @ 10GHz 65A
A Silver/Copper 110dB @ 10GHz 65A
E Pure Silver 110dB @ 10GHz 65A
H Pure Silver 110dB @ 10GHz 80A
K Silver/Copper 110dB @ 10GHz 85A
J Pure Silver 80dB @ 10GHz 45A
L Silver/Nickel 100dB @ 10GHz 75A

At NEDC, we manufacture a lot of custom gaskets. If you have an application that you believe could utilize an electrically conductive custom silicone gasket, or for more information please contact sales@nedc.com.  

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