Using a little alcohol and q-tips or paper towel and tweezers, clean any residue of adhesive where the gasket was sitting.

After cleaning the gasket surface, without peeling off the adhesive protective sheets yet, set the gasket down over top of the perimeter of the watch just to observe the fitment.

The ifixit force touch gasket comes contained within a handy removable plastic holder.

Once confident with the fitment, peel off the adhesive protective sheet on the under side, line up the gasket to the watch and set it down onto the watch.

Press down around the gasket along the edges of the watch where the gasket sits in its groove so that the adhesive can take hold.

Remove the plastic holder from the gasket. Note that the gasket upper adhesive protective sheet is still in place.