Philadelphia, PA - Electrically conductive silicone rubber gaskets, and cushioning pads that incorporate electrically conductive, pressure-sensitive acrylic adhesive backings are available from Stockwell Elastomerics, Inc. for use in EMI shielding applications. According to a news release from the company, secure lamination of acrylic pressure-sensitive adhesives onto silicone rubber is not possible without priming the silicone rubber. Stockwell has developed a proprietary, low-viscosity primer that permits lamination of 3M Corporation's No. 9713, conductive fabric-supported acrylic adhesive, and Venture Tapes' No. 1692, conductive particle-filled acrylic adhesive, onto conductive silicone rubber and oriented, wire-filled silicone gasketing materials.

Examples include Rogers Corp.'s EC2130 and EC2040 nickel-graphite filled silicone rubber, compressible 30- and 40-durometer conductive gasketing materials. The application of 3M No. 9713 conductive fabric-supported acrylic adhesive is reported to provide a conductive adhesive surface for EMI shielding integrity and dimensional stability to reduce tears during handling and assembly.

Stockwell's SNE555 nickel-graphite filled silicone rubber, SGE565 silver-plated, glass-filled silicone rubber, and SSE586 silver-plated, aluminum-filled silicone rubber have also been supplied with conductive acrylic adhesives. Small 1-inch x 2-inch samples of EC2130 with No. 9713 conductive acrylic adhesive, and SSE586 with No. 9713 conductive acrylic adhesive, are available from the company.