Food-Contact Safe & Post-Cure Free – IOTA LSR 3620 Delivers Precision and Purity
Imagine curing liquid silicone rubber in under one minute, with no secondary oven step, no lingering volatiles, and full confidence in global food-safety compliance. That is exactly what the IOTA LSR 3620 series offers. This platinum-cured, 1:1 mix two-part LSR is engineered for rapid hot curing—45 seconds at 150°C or 90 seconds at 130°C for 2mm thickness—dramatically accelerating production while maintaining exceptional dimensional stability and transparency.
Available in six hardness levels (Shore A 25, 30, 40, 50, 60, and 70), the series allows designers to fine-tune mechanical response: from high-elongation (650%) and low-modulus grades for soft-touch applications, to higher-durometer options with tensile strengths up to 10 MPa and tear strengths reaching 40 kN/m for durable sealing components. All grades are formulated with less than 0.5% VOCs and fully meet BfR, FDA, and RoHS criteria, making them ideal for infant care items, kitchenware, gaskets, and other injection-molded parts that come into direct or indirect contact with food.
Practical handling is simplified by matched viscosities between A and B components (e.g., 280 Pa·s for 3620, up to 380 Pa·s for 3670 at 23°C, 10 s⁻¹), ensuring stable pump delivery and homogeneous mixing. Remember to use only components from the same batch number, and always mix thoroughly before transferring to the molding machine. Store drums below 23°C and respect the 12-month shelf life marked on each label. For manufacturers who demand speed, safety, and superior mechanical balance—without the cost and time of post-curing—the IOTA LSR 3620 series is the clear, reliable answer.