rear window seals

my rear window in my Sei was smashed last summer while i was away on holiday. a local taped a bag over it until we returned. but he used gaffa tape i managed to scrape all the glue off the body work with a credit card and some meths but ive got a patch of glue on the rubber window seals. after hours of rubbing and cleaning i couldnt be bothered with the seals and it didnt seem to move but now im sick of the white patch.

when i tried to remove it when it was still wet it just seemed to move around the seal and not come off. but now its dried anyone got any ideas for removing it?

Try "AutoGlym Intensive Tar Remover"; it's good for removing glue. Finish off with a coat of a bumper care product to put the oils/waxes back into the rubber window seal