... primerless adhesion to many substrates, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker; metal, e.g. aluminium, steel, zinc ... or copper; impregnated, varnished or painted wood; and many plastics.Users ... be discolored in contact with some organic elastomers, e.g. EPDM, APTK and neoprene.HX-6800 is not recommended for use ...