Wilklay SA-1 Kaolin clay Wilkinson Kaolin Extenders / Fillers >> Kaolin Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE >> Water-based Wilklay RP-G1 is a high quality, finely pulverized, air-float kaolin clay with properties specifically selected for the coatings, adhesives, rubber and other polymer industries. It features low viscosities in aqueous systems and has a soft clay in rubber compounds High quality, finely pulverized, air-float kaolin clay. Used in adhesives, rubber and other polymer industries. Provides low viscosities in aqueous systems.