Sealex Hybrid PU PFS-1 Sealant Adhesive is a one-part, elastomeric hybrid material that combines technology to produce a material with many of the same characteristics of silicones and polyurethanes but with better performing characteristics. Unlike many polyurethanes PFS-1 contains no solvents and isocyanates that makes it non-shrink and non-bubbling, consequently it contains less than 2% VOC and is LEED compliant and deemed a green product. Hybrid technology also made PFS-1 to have excellent resistance to weathering including ozone, ultra-violet radiation, freeze-thaw conditions and airborne chemicals.