Great I use DuckDuckGo as well...
So water-soluble pump lubricant =Bar's Leaks 1311-6PK Water Pump Lube with Anti-Rust - 12 oz, (Pack of 6)
https://www.amazon.com/Bars-Leaks-13.../dp/B00BYS6YDO
Currently unavailable.
But by the time I maybe using it...and as there is NO rubber of any kind other than the line I may be using to feed it to the system, I wonder if a fuel line will work without the Bars leak??
Rich