Re: Rust treatment
Reply #6 –
That's the ticket. The polymer is crucial. Fighting the rust wars in Port Aransas at the marine lab we found the best product, by far, to be Conquest by Chemsearch. It, like all the others, is tannic acid based. Unlike others, it included a polymer that functioned as a primer as well. It dried to a slick, hard black surface. You could treat rusty mild steel and it could lie outside in the salt air for six months before rusting again. We typically coated the treated surfaces with multiple coats of either LPS3 or enamel paint. I've seen an electrical disconnect box last ten years, exposed to salt spray and constant salt wind mounted a few feet off the jetties when treated with conquest/LPS3.
Unfortunately, Conquest is very expensive and available to trade/industrial users only. So, I'm keenly interested in your experience with the Black Star product. Ospho....good to treat light surface rust but no durability. Tried numerous other similar consumer grade stuff as well but low durability.
Topic: Rust treatment