Caliper parts, bits and pieces - Questions

The rubber bands were put there to go in the grooves of the bracket to prevent the inner brake pad to "clatter" over bumps or when you stop,back up and hit the brake-the pad would shift in the mount(bracket) and make a clack/snap/clatter. They don't last long in a real world app but hey,somebody tried to fine tune the set up so I give them credit for that..............