AFT-701 Is Designed For Sealing Hip and Ridge Area On Roof Applications. It's Excellent For General Flashing Applications. Aft-701 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. 3" x 50' Roll. Thickness: 30 Mils Tensile Strength: 445 PSI Avg. Adhesive: the Gray Matter Elastomeric Modified Butyl Rubber