Seal N Flex is a fast cure, high performance, one component polyurethane elastomeric joint sealant. When fully cured, it provides a tough, flexible seal capable of cyclic expansion and compression. Seal N Flex is unaffected by UV radiation, atmospheric contamination or pollution. With excellent weatherability and the ability to retain original properties after years of exposure it is the perfect choice for trafficable and vertical applications. It is pick, chemical and fungal resistant.