Long-Term Heat Resistance Meets Process Efficiency – IOTA HTV 329
Heat doesn't have to mean compromise. The IOTA HTV 329 Series redefines high-temperature silicone with a unique combination of thermal stability, mechanical toughness, and processing ease. Designed for demanding applications like high-temperature seals and extruded hoses, this material holds its own where others soften, crack, or lose elasticity.
The performance data speaks volumes. With Williams plasticity values from 150 to 240 and densities ranging from 1.14 to 1.20 g/cm³, each grade delivers consistent cure response and batch-to-batch reliability. Post-aging at 300°C for 72 hours reveals the true strength of this silicone – hardness increases by only 3–6 points, tensile strength remains above 4.9 MPa, and elongation sustains useful levels between 180% and 350%. That means fewer replacements, lower maintenance, and safer operation in high-heat environments.
Practicality extends beyond the oven. The IOTA HTV 329 cures swiftly at 175°C in just 5 minutes (2 mm thickness), streamlining production cycles. It stores without special refrigeration for up to one year, and even after three months, a simple extended mixing step restores full processability. Whether you're a compounder, molder, or product designer, this series offers a dependable foundation for heat-resistant parts that must endure day after day. Trust the IOTA HTV 329 to deliver durability – not just at peak temperature, but through the entire lifecycle of your component.