What is the name of these SSD M.2 heatsink copper sheets?

Would like to add a 2nd SSD in a Lenovo ThinkBook 16p G2 ACH laptop. According to the Hardware Maintenance Manual you have to wrap it in the following: (this then gets in contact with a silicon pad which is already in the laptop) This is what they say about it: Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Solid-state drive (SSD) Cu Foil mylar However, there are zero results on their site and searching online for these terms is rather inconclusive. I suppose that people might call these differently than Lenovo does... Questi

Question by aybe on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.