Flex 80 is an extremely tough yet flexible urethane rubber, perfect for casting durable rubber parts that require strength with a bit of give. With a shore hardness of 80-85A, Flex 80 strikes the ideal balance between rigidity and flexibility, making it a go-to choice for duplicating or creating industrial-grade rubber components. Color Translucent Yellow Mixed Viscosity 1600cP Mix Ratio 1:1 by weight or volume Working Time 4 min Demold Time 2 hours Cure Time 72 hr Hardness 80-85A Tensile Strength 1332 Tear Resistance 190 Elongation % 250 ✔ High Durability – Designed for long-lasting, heavy-use applications✔ Smooth, Bubble-Free Castings – Vacuum or pressure casting recommended for best results✔ Versatile Coloring – To create opaque-colored castings, mix white dye with translucent dyes Whether you're replicating hard rubber parts or crafting custom designs, Flex 80 delivers the strength and resilience you need. What makes Flex 80 different from other Flex Series rubbers? 🪨 Flex 80 is the hardest and most durable in the Flex Series, with higher tensile and tear strength compared to lower shore hardness options. 🚫 Flex 80 is not food or skin safe and should not be used for applications involving direct contact with food or skin. 🛠️ Yes, but it is best suited for harder, more rigid molds. For softer, more flexible molds, consider Flex 20 or 50. ✅ Yes, it can bond to some surfaces. Always use a mold release when casting into non-silicone molds to prevent unwanted adhesion. ⏳ You have 4 minutes of working time before it begins to gel, so plan accordingly. ❄️ Store your urethanes in a cool, dark place away from direct sunlight and high temperatures, ideally between 60°F and 75°F (15°C to 24°C). Keep the container tightly sealed to prevent moisture and air from affecting the formula. Wiping the container tops before sealing can help prevent stuck caps. ☀️ For the best results, pour urethanes in a well-ventilated, temperature-controlled environment with humidity below 60% to prevent defects and bubbles. Once cured, keep finished projects out of direct sunlight to prevent discoloration or degradation.
