Anyone tried this ? if disco window rubbers are just split in the usual places, they can be simply repaired, just done mine, mask off split areas with tape, apply a good quality black sealant to fill the cracks plus a little excess, smooth it over with a damp sponge so that it all looks smooth and even, leave to dry all day, then peel off masking tape, it works. and takes about an hour, just don't forget to use low tack tape.

Then sell is quick