Davis Slick Seam Underwater Seam Compound is a remarkable caulking compound made of fine waxes, pure mineral products, and silicate fibers. This combination makes Davis Slick Seam not only effective but easy to use for any underwater seam application – it requires neither mixing nor priming. Once in place, Slick Seam Caulking Compound stays put no matter how much wood flexes or swells. It adheres to most solid surfaces whether wet, dry, or even oil stained. Cures ready for painting in half an hour.