Bostik Pro PU91 Polyurethane Construction Sealant is a professional-grade sealant designed specifically for construction applications. Ideal for sealing joints and gaps in a variety of materials, this 300ml brown sealant provides superior adhesion and flexibility, ensuring a durable seal that withstands movement and weathering. Bostik Pro PU91 is formulated with high-quality polyurethane for maximum performance and longevity. Its easy to apply, quick-drying, and suitable for both indoor and outdoor use.