Duralac is a highly effective jointing compound which prevents electrolytic corrosion between dissimilar metals. Ideal for mast fittings Winches Aerials Batteries Bolts Screws Rivets etc. Uses for Duralac · Between aluminium alloy plates, extrusions and bolts or rivets used in building applications. · General engineering applications where dissimilar contact cannot be avoided. · Vehicle building where aluminum alloy contacts steel · Marine application where corrosion is accelerated by brine concentration · In close proximity to the sea where a salt laden atmosphere will meet with structures an set up electrolytic cells · Aerospace where rivets/bolts are secured into aluminium plates Application Duralac is supplied ready for use and must not be thinned. It is best applied by brush. When Duralac is applied to metal or other surfaces the volatile solvent evaporates and the compound sets to the touch, but remains tacky for a considerable period. It is important that the joint should be closed while Duralac is still tacky to ensure that it will flow sufficiently under pressure to close the gaps in the joint. It will harden somewhat if a thin film is left exposed to the atmosphere for a long period and this will prevent the making of a close joint. Properties Duralac has low solubility in water and will not erode with time, even when subjected to high pressure from considerable water flow. Duralac enjoys excellent adhesion properties to most substrates and because of its tough flexible composition, has very low water absorption. Duralac has a two year shelf life from the date of despatch when stored below 20°C. Once opened the remaining Duralac will form a skin.