silicone-freeWEICON Bio-Welding Protection provides temporary corrosion protection. It contains no chlorinated hydrocarbons, other solvents or silicones.Bio-Welding Protection is based on hazel nut and sunflower extracts and is biodegradable in accordance with EC Directives.WEICON Bio-Welding Protection prevents the adhesion of weld spatter to gas nozzles and work-piece surfaces without affecting the quality of the weld seam.