Contact adhesive specially developed for use with all Armacell elastic synthetic rubber and polyethylene insulations: Armaflex, Armaduct, Tubolit, Arma-Chek (except HT / Armaflex). Use a cleaning fluid (Special Cleaner) to clean substrates and tools. Contact adhesive based on polychloroprene, solvent-free in aromatic. Armaflex 520 adhesive contains substances that dissolve the surface of Armaflex insulation. After pressing the glued surfaces (dissolved with glue 520) they are permanently joined.