Anyone come up with a source or alternative to that black gasket that glues to the frame over the edge of the surround on JBL speakers like the LE8T and the LE10A? I have a few drivers missing that stuff and a few that are covered in glue / caulking, etc. in a past owners attempt to"fix" their failing surround.

Might as well ask, does anyone know what chemical is safe so soak these gaskets in to attempt to remove all the glue and caulk??