Sika flex 521UV LM Polyurethane Sealant - White 10.3oz Cartridge
The Sika Sikaflex® 521UV LM Polyurethane Sealant is a multi-purpose, non-sag, elastic, one-part silane terminated polymer (STP) with excellent UV and weathering resistance, and excellent adhesion to a wide variety of substrates. The sealant cures on exposure to atmospheric moisture to form a durable elastomer.. It is suitable for use on a wide variety of substrates including wood, metals, (particularly aluminum including anodized components), sheet steels (including phosphated, chromated and zinc-plated components), metal primers and paint coatings (two-part systems), ceramic materials, plastics and glass.