Questions about body
 

Wasnt sure where to post this since I didnt see a Body forum. But have no fear the moderatorss will move it accordingly.
On both the drivers and passengers door jam where the striker is for the door; from just above where the metal meets the b pillar to almost wll the way down, there is a rubberlike compund that seems to be seam sealer. I'm stripping my car and repainting it so I wanted to make sure that that was what that stuff was so I can replace it beore I paint. Thanks