Using concrete sealer as a wood sealer can be an unconventional yet effective solution in certain situations. Concrete sealers are designed to penetrate porous surfaces, providing protection against moisture, stains, and wear. When applied to wood, they can form a durable barrier that helps repel water and resist weathering, similar to traditional wood sealers. However, it's important to choose the right type of concrete sealer, as some may be too rigid or inflexible for the natural expansion and contraction of wood. Always test a small, inconspicuous area before full application to ensure compatibility and desired results.