Hello,
I have a block of heat sink touching ICs. I have another heat sink with fins. I need to touch the two metals and am looking for a grease with thermal conductivity > 4W /mK. Will this part work?
Yes, I believe it should work. Take a look at the data sheet to make sure it will work for you.
Data sheet link: Parker-Chomerics-THERM-A-GREASE-70-Datasheet-CHODS1127.pdf