My 1995 Pathfinder was T-boned by a guy who ran a stop sign. All in all the damage wasn't too bad, but the driver's side door is pretty crumpled, so it doesn't close properly. I sourced a replacement door from a local junkyard, which had already been removed, and I see remnants of what looks like a rubber gasket or caulk on each of the hanging brackets. Does anyone know if this is an actual part (i.e. gasket) with a part number or is it just some sort of caulk used to keep the bracket from shimmy-ing? If it's the former, can you point me where to find the part number? If it's the latter, what is that stuff called, so I can search for it?