Hi @esocrates
You may have to try two layers and check if that works.
Here's the [https://pcsupport.lenovo.com/hr/en/products/chromebook-laptops/lenovo-chromebooks-series/lenovo-ideapad-duet-chromebook/za6f/parts/display/compatible?linkTrack=Caps%3ABody_SearchProduct&searchType=4&keyWordSearch=Lenovo%20IdeaPad%20Duet%20Chromebook%20%28CT-X636F%29%20-%20Type%20ZA6F|parts list] for the laptop.
Click on ''Select Commodity > Die Cut Pieces\Double Sided Adhesive and Foam (7).''
I'm not sure which particular one is the one you need, but in any case when searching online using the Lenovo part number for any of them, all results say no longer available although a few say to contact them for an alternate product.
Hopefully this may be of some help.