11/09/19 - What is this pink sticker called so I can purchase a replacement? Can copper foil, conducive tape be used in place of the clear pink sticker? I would appreciate answers to both questions please. Thank you.

What is this pink sticker called so I can purchase a replacement? Can copper foil, conducive tape be used in place of the clear pink sticker? I would appreate answers to both questions please. Thank you.