There are materials in the Contact RFI package from Polyurethane Foam, Nickel-Copper Taffeta (NI/CU).A type of Fabric Over Foam is provided by the contacter RFI.The RFI EMI comes from the well-known 51H series.
4703AB51H01800 Features
Fabric Over Foam 51H series
4703AB51H01800 Applications
There are a lot of Laird Technologies EMI 4703AB51H01800 RFI and EMI Contacts applications.