Sources for hydraulic fittings, swivels and hoses?

[YankeeClipper]

I'm definitely intrigued by this, and wasn't kidding about the car brakes comment for that matter. There was always something incredibly satisfying about giving an old part new life. In this case, and in my ignorance, I would be concerned about picking an o-ring that was made of the wrong material, or just wasn't of the right makeup to withstand the friction, or any pressure or compression in there, or of course the brake fluid.

Definitely happy to learn something however.