Red Baron Flex-Tuff CA™ is a clear, rubber toughened cyanoacrylate that gives you a degree of flexibility in a CA that never before was possible. Cured joints will bend and have better shock strength than any regular CA product. They are perfect for joints that must move or bend with use. Flex-Tuff CAs also have excellent impact resistance, peel strength, and are excellent for bonding a variety of dissimilar materials like metals, rubbers, and plastics. They are also great for use on firewalls, bulkheads, landing gear mounts, servo rails to fiberglass fuselages, or other areas that will be subjected to shock and high levels of vibration. They work well in high humidity and have excellent thermo-cycling properties.