hi - it is a uk model - wfl2063GB
Two ways to change it. Power off and unplug the appliance first.
Both ways require you release the door seal from the front panel, there is a wire secures it in place. Peel back the door seal a little and you'll find it. Normally there's a spring somewhere between 6 and 9 o'clock position.
Once you've released the front you can either release the inner clamp and remove the seal or you can strip the facia and front panel off the machine, gives better access but takes a lot more work.
Once you have the old seal off, fitting of the new one is the reverse process.
Fit to the inner tub first, then to the outer panel last.
It's not the easiest of jobs to do and it's a tight working area but it's certainly manageable by the competent diy'er.
Hope this helps with your repair, good luck.