I too am an ACF50 fan, it has kept my motorbikes in good nick over the years, as well as the metal on boats. I've done a bit of digging on its reaction with rubber and plastic. Apparently it is fine on rubber compounds, i.e. not pure rubber. As far as I know there is only one product that is made of pure rubber and I can't think of a reason why you should want to spray it with ACF50. However..........each to his own.
One thing I have always done during the layup period is to spray all hoses with silicone spray to keep them supple and Armorall on the tyre walls and plastics.
