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.
4619AC51H09600 Features
Fabric Over Foam 51H series
4619AC51H09600 Applications
There are a lot of Laird Technologies EMI 4619AC51H09600 RFI and EMI Contacts applications.