I have had leaking screen surrounds on two non-Volvo vehicles. The first one was sold with the leak. The other was fixed with Capt. Tolley's Creeping Crack Cure.
Not a joke, all the info, including US distributor, is here: http://www.captaintolley.com/
It does work, but bear in mind the inlet for the water may not be near where it drips out so it may take more than one application.