Aquaseal Repair Adhesive & Sealant is a unique urethane rubber compound providing superior adhesion, wear resistance, flexibility and waterproofing. Unaffected by heat or solvents Aquaseal Repair Adhesive & Sealant cures to a flexible thermoset rubber product. An Aquaseal repair can be stretched and folded yet still spring back to its original shape without any damage. The highly concentrated formula has minimal shrinkage, allowing thick repairs with only one permanent application. Aquaseal Tube 1. oz.