Waxyol

https://www.waxoyl-usa.com

Fluid Film is another product that works well but is not as permanent as Waxyol, if you have easy acess like it sounds like you do with this 108 application it would be easy to renew the application every couple years or so.

Fluid film is more liquid and does not harden so to speak. It's lanolin, sheep sqeezins. it's somewhat more DIY friendly and less expensive but not as long lasting is the trade off.

https://www.fluid-film.com/