Trim-Lok Trim Seals are the fastest and easiest way to create a finished edge to seal and protect against weather damage. Available in a wide variety of bulb sizes designed to attach to a wide range of edge thicknesses, Trim Seal is the perfect solution for anything that needs a weatherproof seal with a finished look. Applications include; • Boat hatch seals • RV compartment seals • Door seals • Tool box seals and more