rubber pad

So I have ended up with a spare bit after putting my (new to me) 2007 DL650 back together. I have found roughly where the part is supposed to be: it is listed as "4" on the exploded diagram of the tank and is a small rectangular rubber block measuring approx .75" square by 1.75" long marked with...

Ok, was going to wait for the bike to be done, but figured why wait: When I picked up my '12, I notice one of the rubber square blocks that are under the seat was about to fall off. Service guy pushed it back on and I rode away to home. Next day I was checking out the bike in the daylight...