Windows on Linux though. Guy probably has Wine in his cup holder.

OP, do this, but when you use silicone caulk (kitchen and bathroom stuff), you need to use rubbing alcohol in a spray bottle to smooth it out or it will stick to your finger and make a mess. Water works great for latex caulk.

You would want something like this. The important part is that it comes in two pieces so you can install it without having to disconnect anything to pass it through. The brushes are to resist airflow, but they are obviously not going to be airtight or pest resistant. For that, I would use expanding foam insulation. Those cables and pipes aren’t going anywhere, and if you absolutely had to replace one, removing the sprayfoam is a trivial effort compared to the rest of the job.

Split brushed plate for cable passthrough

Of note, that stuff works great, but you need to be very sparing with it, as it very difficult to sand compared to the premixed stuff. Make sure you have it as close to the way you want it to look as you are able before you let it dry. A lot of drywallers use this stuff for pre-filling poor, uneven drywall board work before taping, as it is very hard stuff. But it can take a lot longer to dry that way than the bag would suggest. Sheetrock 90 turned into Sheetrock Maybe Tomorrow in my kitchen reno after I used it to replace sections along the edges of some damaged drywall that tore out when I removed the old tile backsplash.