Novalk NFH15903 is a two-component (2K) post-catalyzed clear sealer, specifically recommended for sealing massive wood or veneered substrates. Characterized by perfect flow, high build, good verticality, and excellent sandability, it provides an ideal foundation for various wood applications. To achieve optimal results, NFH15903 should be hardened with NCH999 at 10% by volume. For reduction, use ND5101 (fast thinner) or ND5920 (slower) at 20-40% by volume. This post-catalyzed clear sealer ensures a smooth and durable substrate preparation for your projects.