Soudal Soudaflex White is a flexible polyurethane sealant in a convenient 310ml cartridge, designed for sealing joints and gaps in building construction, plumbing, and electrical installations. This 40FC formula offers excellent adhesion to most substrates including wood, metal, concrete, and plastic, with fast cure times and superior flexibility when set. Ideal for electricians, builders, and facilities managers requiring a reliable, weather-resistant sealant for both indoor and outdoor applications.