... exhibits excellent primerless adhesion to most non-porous siliceous material, e.g. glass, coated glass, tiles, ceramics, enamel, glazed tiles and ... -1200 may be discolored in contact with some organic elastomers, e.g. EPDM, APTK and neoprene.HX-1200 is not recommended ... used in preparing specifications) Weatherability Silicone Sealant for Aluminum Composited Plate