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Alum-a-Grip is designed for sealing hip and ridge area on roof applications. It’s excellent for general flashing applications. Aluma-Grip has an aggressive grip, stays flexible during application, assuring immediate sealing on contact, and superior long-term adhesion. Providing leak proof results, this butyl adhesive/sealant is asphalt and solvent free and offers easy, fast application. Thickness: 30 Mils Tensile Strength: 445 psi average Adhesive: THE GRAY MATTER™ Elastomeric Modified Butyl Rubber SDS