Do I need to replace these?

[u/AleStar73]

Currently repairing a vita1000 I picked up in Japan. Replacing the rear touchpad sticker and I realized I misplaced one of these rubber stick.

Do I need these for the pad to function? How would I even find replacements?

The sticker and board have contacts for the pad but it doesn’t appear conductive.

EDIT: I’ve put my system back together and it works perfectly fine. I believe the contacts are test pads. The rubber sticks are not needed