SPRESIN Flex-It 70 is a high-strength, flexible urethane casting resin designed to create firm yet flexible molds, gaskets, seals, models, and functional prototypes. It balances superior tear strength and elongation with enhanced firmness, making it an ideal solution for casting parts that need to retain shape while still being flexible. Whether you're making industrial seals or custom molds, this 2-part resin system provides professional-grade reliability. Perfect for both seasoned makers and first-time users, Flex-It 70 mixes easily and cures consistently, producing clean results with excellent tensile strength. Its firm yet flexible finish makes it ideal for applications that require more rigidity than softer rubbers but still benefit from elasticity. It also performs well under mechanical stress and offers solid chemical resistance, allowing your molds and parts to endure repeated use. This urethane resin is a great alternative to silicone or softer urethane kits, especially when you're casting parts that need to be tougher or more shape-retentive. From detailed prototypes to functional seals and concrete mold applications, Flex-It 70 performs across a wide range of DIY and industrial scenarios. This 32 oz kit provides a manageable amount for small projects, making it great for testing out high-durometer resin casting or creating short-run production parts. When you need molds that can take a beating without cracking or deforming, SPRESIN Flex-It 70 delivers a dependable, long-lasting solution.