A Contact RFI containing the materials of Beryllium Copper is included.RF type is Gasket from the contacter RFI.As you can see, this RFI EMI comes from the well-known Electronit series of products.
8401011742 Features
Gasket Electronit series
8401011742 Applications
There are a lot of Laird Technologies EMI 8401011742 RFI and EMI Contacts applications.