Hi Ralph,
If you haven't already done so you can purchase a new seal from us here:
http://www.ukapplianceparts.com/laundry_models.asp?search_fd3=Door%20Seals&search_fd17=fl828
Just copy and paste in to your browser.
As for changing it they are renowned in the trade as probably the most difficult to fit, unless you have the 'knack'!
This is because the counter-balance weight is fitted all the way around the drum leaving just 25mm gap to get your fingers in - it just takes perseverance.
Lee, January 2007