There are materials in the Contact RFI package from Conductive Elastomer.It is possible for the EMI/RFI to function normally at -29°C~66°C.A type of Gasket is provided by the contacter RFI.
10-04-2657-6502 Features
Gasket
10-04-2657-6502 Applications
There are a lot of Parker Chomerics 10-04-2657-6502 RFI and EMI Contacts applications.