I think a few people gave this stuff a go some time ago. Seems like the business for Trailers, break hubs and springs, break cables and all sorts of stuff. You spray it on, in it's liquid form. The liquid evaporates to leave a sticky film that is waterproof.
Have tried it, I use it on reel handles and it seems to last. Don’t know if it would last the pace around the brake springs etc. We have already greased up our mechanism with “std” grease. It seems to be good stuff for hitches and rollers etc. Some of the wurth stuff isn’t the cheapest so make sure to shop around!
Have heard that it's expensive stuff alright. They seem to rave about it on the biking, Karting and performance car scene. I was thinking that it might be good to put a coating on the back of the break hubs and on some of the cables and springs that do not move too much. Will find out how much it will set me back first
Steering on my boat jammed solid couple of years ago, got this stuff and have never looked back it's brilliant. Can't remember price but still have original can so will not brake the bank.