Duralac Anti-Corrosive Jointing Compound 115ml
2 in stock
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 20Â°C. Once a container is opened, the remaining Duralac will form a skin.
Duralac is indispensable for the sealing of joints between dissimilar metals of all types, including magnesium and its alloys. Consideration should also be given to galvanic corrosion of the same metal where the electrolyte varies in concentration forming a concentration cell. Duralac has excellent protection properties for metals in contact with wood, synthetic resin composition, leather, rubber, fabrics etc. When components of a structure are of different materials, it is essential the 'points or faces' of contact be treated with Duralac to inhibit corrosion in the presence of an electrolyte where considerable differences in potential arise.
- Between aluminium alloy plates, extrusions and bolts or rivets used in building applications
- In general engineering applications where dissimilar contact cannot be avoided.
- In vehicle building where aluminium alloy contacts steel.
- For marine application where corrosion is accelerated by brine concentration.
- In aerospace where rivets/bolts are secured into aluminium plates.
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.
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