Duralac Anti-Corrosive Jointing Compound – Original Duralac Paste
From £21.27£25.52
SKU: CONF_4814Duralac is a high-performance anti corrosive jointing compound designed to inhibit electrolytic corrosion between dissimilar metals. Often referred to in the trade as Duralac paste, this barium chromate-based material is essential for any application where different metals—such as aluminium and stainless steel—meet in a damp or marine environment.
- A long lasting corrosion inhibitor to protect against electrolytic action.
- Originally developed for the aviation industry and now widely used in both marine and transport applications.
- Duralac Green has an improved environmental footprint and exceeds standard Duralac in performance
| Options | Unit Price | Bulk Price |
|---|---|---|
| Green 115ml SKU: DUR115G | £21.27£25.52 | 4+: £19.15£22.98 |
| 10+: £17.03£20.44 |
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- Key Information
A long lasting corrosion inhibitor to protect against electrolytic action was originally developed for the aviation industry and is now widely used in both marine and transport applications. Ideal for use 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 close proximity to the sea where a salt laden atmosphere will meet with structures and set up electrolytic cells; between aluminium alloy plates, extrusions, and bolts or rivets used in building applications; in aerospace where rivets/bolts are secured into aluminium plates.
By forming a low-permeability barrier, Duralac jointing compound prevents the "battery action" that leads to galvanic corrosion. Its chemical-resistant and water-repellent properties make it the premier choice for marine engineering, aerospace maintenance, and automotive fabrication.
Why Professionals Choose Duralac:
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Proven Protection: The industry-leading anti corrosive jointing compound for over 50 years.
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Versatile Bonding: Ideal for joints between aluminium, magnesium, steel, and copper alloys.
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Marine Grade: Specifically formulated to resist seawater and harsh salt-spray environments.
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Reliable Consistency: A thick, barium-rich duralac paste that stays in place even under vibration.
Duralac Anti-Corrosive Jointing Compound FAQs
What is the difference between Duralac and Duralac Green?
The original Duralac jointing compound (yellow) contains barium chromate, which is the most effective inhibitor for heavy-duty marine use. Duralac Green is a chromate-free version developed for environments where a non-toxic, eco-friendly alternative is required, though original Duralac remains the standard for maximum protection.
How do I apply Duralac paste?
Duralac paste should be applied thinly and evenly to both mating surfaces before they are joined. Ensure the surfaces are clean, dry, and free of grease. Because it does not set hard, it allows for easy disassembly of parts in the future.
Where should Duralac jointing compound be used?
It is primarily used in joints between dissimilar metals, such as fitting stainless steel bolts into an aluminium mast, or attaching copper fittings to steel plates. It is a staple in boat building, mast maintenance, and aircraft airframe repairs.
Is Duralac waterproof?
Yes, Duralac has extremely low water permeability and is designed to remain flexible to ensure the seal remains intact even as the metals expand and contract with temperature changes.
