I have had the door seals off about a dozen times doing acoustic insulation upgrades multiple times & also for wiring. The rubber gets increasingly loose. You can squeeze in the metal in the rubber by hand if you try hard enough, so the rubber then grips onto the body/door surround.

Acoustic insulation thread:
https://www.freel2.com/forum/topic33026.html Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18