West System 423 Graphite Powder in 200g tubs for use with West System Epoxy as supplied by Wessex Resins and Adhesives Limited.The West System 423 Graphite Powder is a fine black powder that is added to West System epoxy (10% by volume) to produce a low friction exterior coating with increased scuff resistance, durability and mar resistance. In the marine environment, epoxy / graphite is commonly used as a coating on rudders and centreboards, or on the bottoms of racing craft that are dry sailed. The epoxy / graphite mix can also be used in teak deck construction to simulate traditional seams in appearance and to protect the resin from sunlight.