Use of Duralac green

Duralac green is based on Zinc(Tri)Phosphate so is thought to be compatible with EkoPrime, which I had previously shown to be rich in Zinc. I have previously tested for mechanical compatibility with EkoPrime. Stewart Aircraft Systems also do not expect any issues. Due to the fine nozzle, the addtional work of applying a bead to each rivet is minimal. Cleanup is easy - white spirits removes excess without affecting the EkoPrime in any noticeable way. Ethanol is ok, but is slightly softens the EkoPrime. EkoPrime green is not difficult to clean up, unlike the Duralac yellow.

This Durelac green is being used on all rivets. Its relatively non-toxic nature (compared to the Cr6+ based Duralac yellow) make this a practical proposition from a safety perspective. The main reason for using this material is it will form a physical barrier for moisture penetration under rivet heads, preventing a significant point of corrosion (in the event of topcoat failure), in concert with the EkoPrime.