A Contact RFI containing the materials of Polyurethane Foam, Nickel-Copper Polyester (NI/CU) is included.RF type is Fabric Over Foam from the contacter RFI.As you can see, this RFI EMI comes from the well-known I/O Gasket series of products.
4577AB01K01800 Features
Fabric Over Foam I/O Gasket series
4577AB01K01800 Applications
There are a lot of Laird Technologies EMI 4577AB01K01800 RFI and EMI Contacts applications.