M-1 Adhesive Tube is a high-performance sealant designed to bond aggressively to a variety of materials, including EPDM, PVC, and metal. It forms a strong, non-slumping seal that cures with atmospheric moisture, and is UV-resistant and waterproof, making it perfect for underwater repairs. Plus, it can reach a 45 Shore-A hardness, making it highly durable for the toughest bonding and sealing applications.