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SikaFlex 15 LM is a premium polyurethane sealant engineered for low-modulus applications where flexibility and adhesion are critical. This 10 oz cartridge delivers excellent movement accommodation, making it ideal for joints in flooring, concrete, and masonry where thermal expansion and contraction occur. The low-modulus formula minimizes stress transfer to surrounding materials while maintaining a durable, waterproof seal. Fast-curing and paintable, SikaFlex 15 LM bonds effectively to most substrates without primers, offering professional-grade performance for demanding construction and renovation projects.