Safe to use foam to suppress knocking/vibration?

Hi, mechanical numpty here...
A vibration has recently developed in my engine bay (Mondeo 2008 1.8 TDCI). It sounded like a blowing exhaust/manifold but when I got underneath it I found that its the air filter box (centre in the picture) that is resonating and knocking against a neighbouring hose (below/adjacent).
So I'm looking to secure some foam or maybe rubber in there to dampen the noise and any potential damage, but is it safe to do so given the temperatures in the engine bay? I don't believe the two parts it would touch get hot, but might the proximity to the engine mean I need to be careful what I use?
Thanks for any advice

No foam I'm afraid....by all means pack with rubber (old inner tube maybe) to help pack things - or maybe careful use of cable ties to gently keep the items apart?
I'm just concerned any loose foam could get trapped by any belts, or drop onto the exhaust.
John

you would do better to find why it is loose and replace the screw.

Usually the air box has a plastic peg on the bottom which locates into a hollow rubber bung.....which may have gone AWOL.
John

If the two components are so close together, can you just cable tie them both to each other so that they're always in contact and can't rattle? You can join multiple ties together end to end if they're not long enough.