Chomerics offers the broadest range of metal-based EMI gaskets available. 

These products include knitted wire mesh, mesh over elastomer core, oriented wires in elastomers, and metal screen or expanded foil impregnated elastomers 

http://www.chomerics.com/products/emi_wiremesh.htm

Products include:

• All mesh knit from Aluminium or Monel (nickel-copper alloy)
• Mesh knitted around a square or round core of neoprene or silicone.
• Combo strip gaskets, a flat neoprene or silicone sponge with a mesh on the edge for shielding.
• Compressed mesh gaskets, good for high temperature applications.
• Framed mesh. Custom made frames with a mesh on the edges for shielding.