UPVC window seal. (CT9)
3 tubs UPVC window seal - approx 20m per tub. I don't know the size of the actual seal but I think it might have been bought from Screwfix so maybe you'll be able to check it on their website using the code 89084-0001 or the barcode 5 017259 001578.
This offer has been gifted to someone and is no longer available.