Alu-flo™ ZA-1 is a zinc–aluminium filler metal that can be used as a product for repair of aluminium components or for joining non-critical parts. It has also been used for HVAC&R joints. However, it should be noted that Alu-flo™ ZA-1 joints can exhibit shrinkage gaps formed on cooling and galvanic corrosion when joining copper to aluminium. Consequently special consideration should be given before selecting it. This product is available as a flux cored wire or strip with flux encapsulated into a central channel.