€¢ Up to 50% more flexible than other silicones €¢ Provides excellent adhesion to difficult substrates like painted woods and window PVC €¢ Extreme weather applications (from -37 to 60 deg C) >> Premium quality; 100% silicone rubber sealant that provides outstanding durability and flexibility for a long-lasting waterproof seal that won't shrink or crack. This one-component; neutral-cure sealant is low in odor and cures to a tough rubbery solid upon exposure to moisture in the air. Provides outstanding adhesion to a wide variety of surfaces such as PVC; vinyl siding and painted wood. Cured sealant is mold and mildew resistant. Indoor/outdoor use. Backed by a Lifetime Guarantee. Meets ASTM C920 Specification; Class 25; Uses G; A and M."