Wax. I suppose if you had a hell of a blender you might be able to emulsify your own from canning wax, water and a bit of surfactant. That's detergent, Leif.
The military is about the only place I know who use water emulsion wax to this day - buff marks show effort - but you might want to check with a building maintenance supply place. The wax I spread was a little thinner than Anchorseal, but should do in two coats.