Hi Alistair - I have used Tigerseal with success on a classic car. I have also used a high quality silicone sealant around a caravan fixed front window overlapping the edge of the rubber seal and onto the window. That solution lasted for many years until I sold the van. Be very carefull if using silicone and use masking tape each side of the proposed treatment area to get a good line and avoid spreading the silcone onto unwanted areas. Best of luck - John
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