Help removing and fitting Hoover Softwave 800 rubber door seal?

Hi all,

I was wondering if anybody could help out.

I have a Hoover Softwave 800 (AC270) and its grey door/drum rubber seal has ripped, so need to replace it.

I can see its attached to the drum cylinder and the door frame, but are unsure how its held on.

Would anyone know how the seal is held on and how to take it off to replace with a new seal.

Thanks