Stockwell Elastomerics, Inc. now provides .020″ and .032” thick Fabric Reinforced Nickel-Graphite Filled Conductive Silicone Rubber for EMI Shielding Gaskets with narrow cross sections. The fabric reinforcement enhances durability and dimensional stability in filled conductive silicone elastomers that tend to have low tear resistance.
SNE-556-R is a 65 durometer conductive silicone used for EMI and environmental sealing. The reinforced fabric is metalized to enhance the Z-axis conductivity of the composite material, which compares favorably with high performance silver filled silicone elastomers.
SNE-540-R is a softer version, made in 40 durometer for more conformability.
Both SNE-540-R and SNE-556-R are made in 12” and 15” wide continuous rolls, enabling large gaskets to be made without splices. Standard thicknesses are .020” and .032”; custom thicknesses are also available.
Nickel-plated graphite-filled silicone elastomers provide shielding performance exceeding 100 dB at frequencies up to 2 GHz. Nickel-plated graphite materials are especially attractive for commercial and defense programs where cost sensitivity and high performance are required. Common applications include portable communications, power supplies and displays requiring IP64, IP65, IP66 and IP67 sealing with EMI attenuation. Nickel-graphite filled silicone gaskets are available with 3M 9713 conductive acrylic adhesive and 3M 9719 conductive silicone adhesive for applications where an adhesive backing may aid the assembly process. With the addition of fabric reinforcement, the durability and dimensional stability of these materials is greatly improved.
