Cover all hole in cases improve airflow?

ikmal2129

Honorable
Oct 17, 2012
28
0
10,530
Hi, Currently my pc case have 5 fan.

intake: 1x120mm front and 2x80mm side panel,

outake: 120mm rear and top(high rpm)

would sealing all possible holes in the case with silicon and or duct tape increase air flow and pressure and reduce the heat inside the case?, isnt it if the hole r all cover up, the air will be tight and will go
out only thru the fan?, just wondering cause i wouldn't mind spending 45 minutes to drop a few degree,