There are materials in the Contact RFI package from Polyurethane Foam, Nickel-Copper Polyester (NI/CU).A type of Fabric Over Foam is provided by the contacter RFI.The RFI EMI comes from the well-known I/O Gasket series.
4570AB01K09600 Features
Fabric Over Foam I/O Gasket series
4570AB01K09600 Applications
There are a lot of Laird Technologies EMI 4570AB01K09600 RFI and EMI Contacts applications.