This agent is the perfect all rounder resistant to weathering, seawater, UV-radiation, all purpose flexible marine sealant, bonds extremely well to all the standard materials used in boat construction. Outstanding elasticity ensures a durable, long-lasting seal. Also perfect for most caravan and motorhome applications. A non sag 1 C Polyurethane sealant specifically developed for the marine market, which is moisture Cured to form a durable elastomer. Product benefits: 1-C formulation, elastic, low odour, resistant to ageing and weathering, non-corrosive, can be over-painted, can be sanded, bonds well to a wide variety of substrates, electrically non-conductive. Typical surfaces: wood, metals, metal primers and paint coatings (2-c systems), ceramic materials, plastics, GRP etc. Once cured, Sikaflex 291 can easily be sanded down as required. Must not be used to seal plastics that are prone to stress cracking e.g. Plexiglas, polycarbonate, etc. Color: white. Volume – 300 ml.