NEW EMP Faraday Box Electromagnetic Shielding Gasket Prepper #- 4600293-66 LOT of 2 This is picked up at a govt auction. You can research this number yourself. This was the gasket for a Govt. Recon Plane (Nimrod 2000 air reconnaissance) to provide shielding of radar and electro interference. If it works for multi-million dollar planes, it will work for you!!!! : A shaped metallic item designed to increase the effectiveness of radio frequency/electromagnetic interference, or a nonmetallic item containing a wire mesh, metal, or other electrically conductive particles designed to provide environmental sealing and radio frequency/electromagnetic interference shielding. not sure what all you can use this for. Wire mesh gasket. I am in the military reserves and will try hard to ship ASAP, but sometimes I am away on duty (which is why I have the 4 day shipping set) Will ship international (to NATO Nations and Israel Only). FREE USA SHIPPING