Evo stick or other neoprene glues will work. The surfaces need to be clean and you use a thin filming. You wait for the film to dry slightly and then press together.
I worked as Global Supply Chain Director for an industrial rubber company. We made or bought in glue. Whilst industrial ones have more neoprene and faster evaporating solvents in them they are essentially the same. Technique and preparation is all.
If you can get industrial glue then it is better but be aware there are dangerous solvents like toluene in them so ventilate the area and minimize exposure to the fumes. Ideally do it outside.
