IOTA LSR 3500 Series Food-Grade Liquid Silicone Rubber – Precision & Purity for Molding Excellence

Discover the versatility and reliability of IOTA Silicone’s IOTA LSR 3500 Series, a premium range of 1:1 mix ratio addition-cure liquid silicone rubber designed for high-performance mold-making applications. Ideal for both industrial and creative uses, this food-grade silicone is specially formulated for producing adult products, human organ simulations, mannequins, bust pads, shoulder pads, and more. It is also an excellent choice for food contact molds, including candy, cake, and soap molds.
Key Features:
Non-stick, flexible, and easy to clean
Fast cooling and excellent color retention
Resistant to deformation and high temperatures up to 250°C (stable performance at 200°C)
Technical Specifications:
Available in hardness ranges from 0 to 60 Shore A, the IOTA LSR 3500 Series offers low viscosity (5,000–45,000 cps), high tear strength (≥14–22 KN/m), tensile strength (≥2.0–4.8 MPa), and elongation (≥150–550%). With a shrinkage rate of ≤0.1%, operation time of 30–40 minutes, and full cure in 4–6 hours, it ensures precision and efficiency.
Easy Operation:
Mix A and B components by weight in a 1:1 ratio.
Degas under vacuum to eliminate bubbles.
Pour gently over the master model for natural flow and minimal air entrapment.
Important Precautions:
Avoid contact with tin, sulfur, amines, or carboxyl compounds to prevent cure inhibition.
Always test small batches before full use.
For faster curing, apply mild heat.
Choose IOTA LSR 3500 for consistent, high-quality molds that bring your designs to life.