Product review (5 stars): Easy to do, and looks like new.
The seal on my oven suffered from several spillages and overflows which had caused it to be inflexible and discolored along the bottom. This new seal was an exact replacement (and with about 20 fastening points across the length that need to align with small holes in the oven's flange, must be exact). Repair was simple: remove a single screw that retains a cover plate; gently coax/pry the old seal away from the flange; clean flange, attach new seal by pressing the embedded clips into the holes in the flange; replace cover plate. In 10 minutes (7 of those for cleaning) and the oven looked like new. BTW, delivery was on time.