[TEARDOWN] Looking for thermally conductive tape: even ifixit doesn't go that far ...

I bought a replacement midframe for the OPO (cf on Aliexpress: http://goo.gl/UgCYbH), which (like any other I found on other sites) doesn't come with the thermally conductive adhesive transfer tape (cf ifixit teardown at step 19 https://www.ifixit.com/Teardown/OneP...Teardown/26484). My question is where to buy this kind of tape? I've searched the web to no avail, but that might be because I'm not using the right words?

Any insight welcome! :)