Solar Seal is based on terpolymer technology, which offers an alternative to silicone & urethane sealants. Protect your investments with high-performance terpolymer chemistry that provides exceptional weather resistance, adhesion, elongation and color stability. Exceptional joint flexibility - Full UV protection - Exceptional adhesion - FIELD PROVEN OVER 27 YEARS - Paintable - Skins in 1 hour - 4 Season application. 11oz. tube. 2 year shelf life @ 75 degrees.